Which type of milk is commonly used as a base for many thai dishes?.

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Answer 1

Coconut milk.

Cocunut milk is used in Thai dish as it is thicker than usual dairy milk and also it is unsweetened milk which good support of spicy food.


Related Questions

Three group of students were testing to see how much weight a cardboard bridge could hold before it collapse each group follow the same procedures which is scientific advantage of the group following the same procedure

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The scientific advantage of the three groups following the same procedure is that it ensures consistency and accuracy of the results obtained.

Why is following the same method important?

If the groups utilize the same methodology, they are effectively conducting a controlled experiment, and any changes in the outcomes may be attributed to the independent variable being assessed rather than to variations in the procedures used.

If one group, for example, used a different kind of cardboard or adhesive than the other groups, the results could vary, but not necessarily because the bridge was stronger or weaker.

Any changes in the results, however, are more likely to be caused by variations in the weight applied to the bridge than they are to be the result of variances in the materials used if each group employs the same type of cardboard and glue.

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Here are the answers:

• The groups can copy results from each other.

A scientific advantage of the groups following the same procedure is that it increases the reliability and validity of the experiment's results. By having a standardized procedure, it eliminates the potential for confounding variables that may affect the outcome. It also allows for accurate replication and comparison of results between the groups. When the same procedure is followed, any differences in results can be attributed to the variable being tested and not to procedure variability. This enhances the scientific rigor of the experiment and increases the confidence in the findings.

Which solids have the same types of vertical cross sections through the base?.

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Solids that have the same types of vertical cross sections through the base are known as prisms.

A prism is a solid that has two congruent and parallel bases that are connected by a set of rectangular or parallelogram faces. The vertical cross sections of a prism are identical, regardless of where they are taken along the height of the solid. Examples of prisms include rectangular prisms, triangular prisms, and hexagonal prisms. In contrast, solids that do not have identical vertical cross sections through the base are known as pyramids.

Pyramids have a base that is a polygon, but their faces all converge at a single point, known as the apex.

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Calculate the [H3O+] in a 0.10 M solution of NH4NO3.
a. 1.7 × 10−5 M
b. 7.5 × 10−6 M
c. 2.2 × 10−6 M
d. 5.8 × 10−7 M
e. 1.3 × 10−9 M

Answers

NH4NO3 is a salt that undergoes hydrolysis in water. The NH4+ ion is the conjugate acid of the weak base NH3, which can accept protons from water, increasing the concentration of H3O+ in the solution.

To find the [H3O+] in the solution, we need to consider the dissociation of NH4+ in water:

NH4+ (aq) + H2O (l) ⇌ NH3 (aq) + H3O+ (aq)

The Kb of NH3 is 1.8 × 10^-5. Since NH4+ is the conjugate acid of NH3, we can find the Ka of NH4+ using the relation: Kw = Ka × Kb.

Kw = 1.0 × 10^-14 (at 25°C)

Kb = 1.8 × 10^-5

Ka = Kw/Kb = 5.6 × 10^-10

The dissociation of NH4+ can be written as:

NH4+ (aq) + H2O (l) ⇌ NH3 (aq) + H3O+ (aq)

At equilibrium, the concentration of NH4+ that has dissociated to NH3 and H3O+ is given by:

[NH4+] = [NH3] + [H3O+]

Since we have a 0.10 M solution of NH4NO3, the initial concentration of NH4+ is also 0.10 M. At equilibrium, we can assume that only a small fraction of NH4+ will have dissociated into NH3 and H3O+.

Let x be the concentration of H3O+ formed due to the hydrolysis of NH4+. Since the stoichiometric ratio between NH4+ and H3O+ is 1:1, the concentrations of NH4+ and NH3 will both decrease by x. Hence, the equilibrium concentrations of NH4+, NH3, and H3O+ are:

[NH4+] = 0.10 - x

[NH3] = x

[H3O+] = x

Using the expression for the Ka of NH4+, we can write:

Ka = [NH3] [H3O+] / [NH4+]

Ka = x^2 / (0.10 - x)

Since the value of x is much smaller than 0.10 (due to the assumption that only a small fraction of NH4+ will dissociate), we can approximate (0.10 - x) as 0.10 in the denominator.

Substituting the value of Ka and solving for x gives:

x = [H3O+] = sqrt(Ka [NH4+]) = sqrt(5.6 × 10^-10 × 0.10) = 7.5 × 10^-6 M

Therefore, the [H3O+] in a 0.10 M solution of NH4NO3 is 7.5 × 10^-6 M, which corresponds to option (b).

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Carbonyl C atoms (shown Red) : We can see both these C are bonded to 3 other atom and there is one C=O which is having 1 pi and 1sigma bond. These C atoms bonded to other 3 atoms with 3 sigma bond and 1 pi bond. 3 sigma bonds are formed using sp2

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Carbonyl C atoms are shown in red and they are bonded to three other atoms. In addition, there is one C=O bond with one pi and one sigma bond.

The carbonyl carbon is sp2 hybridized and forms three sigma bonds with the other three atoms. The fourth bond is formed by the pi bond in the C=O group.

The sigma bonds are formed by overlapping sp2 hybrid orbitals on the carbonyl carbon and the other atoms. The pi bond is formed by overlapping the p orbitals on the carbon and the oxygen in the C=O group. This results in a double bond between carbon and oxygen, which makes the C=O group highly polar.

The carbonyl group is an important functional group in many organic compounds and plays a key role in various chemical reactions.

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Sulfur-35 decays by beta emission. The decay product is.

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The decay product of Sulfur-35 by beta emission is Chlorine-35.

Sulfur-35 decays by beta emission, which means that a neutron in its nucleus is converted into a proton. This process releases a beta particle (an electron) and an antineutrino. The decay product is the element that results from this transformation.

Step-by-step explanation:

1. Sulfur-35 undergoes beta emission.
2. A neutron in the nucleus is converted into a proton.
3. The atomic number increases by 1 due to the addition of a proton.
4. The new element is identified based on its new atomic number.

Since the atomic number of sulfur is 16, after beta decay and the addition of a proton, the new atomic number becomes 17. Element with atomic number 17 is chlorine. Therefore, the decay product of Sulfur-35 by beta emission is Chlorine-35.

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the solubility of gases in water decreases with increasing temperature [ select ] most solids are more soluble at higher temperature. [ select ] pressure has little effect on the solubility of liquids and solids because they are almost incompressible. T/F

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The solubility of gases in water decreases with increasing temperature is True.Most solids are more soluble at higher temperature is correct statement.Pressure has little effect on the solubility of liquids and solids because they are almost incompressible is a true statement.

Solubility is the amount of a material that can be dissolved in a liquid to form a solution; it is often represented as grammes of solute per litre of liquid. One fluid's (liquid or gas) solubility in another can be entire (e.g., methanol and water are completely miscible) or partial (e.g., oil and water hardly mix). Generally speaking, "like dissolves like" (for instance, aromatic hydrocarbons dissolve in one another but not in water). A material's solubility in two solvents is measured by the distribution coefficient, which is used in several separation techniques (such as absorption and extraction).

In general, as temperature rises, so do the solubilities of solids in liquids, while they fall as temperature rises and rise with pressure for gases. At a specific temperature and pressure, a solution is said to be saturated when no additional solute can be dissolved in it (see saturation).

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Explain the wave behavior known as interference. Explain the difference between constructive and destructive interference.

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Interference is a wave behavior that occurs when two or more waves interact with each other.

When waves meet, they can either reinforce or cancel each other out, resulting in two types of interference: constructive and destructive.

Constructive interference occurs when the crest of one wave overlaps with the crest of another wave, resulting in a larger amplitude or a stronger wave. This reinforcement of waves leads to an overall increase in energy and is often seen in sound systems, such as when multiple speakers are used to amplify sound.

Destructive interference, on the other hand, occurs when the crest of one wave overlaps with the trough of another wave, resulting in a cancellation of energy. The waves effectively cancel each other out, leading to a reduction in amplitude or a weaker wave. This type of interference is often observed in noise-cancelling headphones, which use destructive interference to cancel out unwanted sound waves.

Overall, interference is a fundamental wave behavior that occurs when waves interact with each other. Depending on the phase relationship between the waves, interference can either reinforce or cancel each other out, resulting in constructive or destructive interference, respectively.

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What are the organisms called which we think are the precursors of more complex life?.

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The organisms that are thought to be the precursors of more complex life are called "single-celled organisms" or "prokaryotes."

These organisms lack a nucleus and other membrane-bound organelles, and are believed to have evolved into more complex organisms through a process known as endosymbiosis.

                                        This process involved the incorporation of one prokaryotic cell into another, leading to the development of eukaryotic cells with distinct membrane-bound organelles. The details of this process are still being studied and debated by scientists.

                                      The organisms called which we think are the precursors of more complex life are known as "prokaryotes." Prokaryotes are single-celled organisms that lack a nucleus and other membrane-bound organelles. They are considered to be the ancestors of more complex life forms, such as eukaryotes, which include plants, animals, and fungi.

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which property can be used to differentiate between a 50.-gram sample of solid potassium nitrate at stp and a 50.-gram sample of solid silver chloride at stp?

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Melting or boiling points are the property that can be used to differentiate between a 50.-gram sample of solid potassium nitrate at stp and a 50.-gram sample of solid silver chloride at STP.

The melting point of a liquid is the temperature at which the liquid transforms from a solid to a liquid under atmospheric pressure. This is the location where the liquid and solid phases are equally present. The substance's melting point varies with pressure as well and is reported at standard pressure. The temperature at which a liquid's vapour pressure equals the surrounding atmosphere is known as the boiling point of the liquid. The melting point of silver chloride is 455°C, while the melting point of potassium nitrate is 334°C.

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Based on the following observations for 3 metals (X and Y) and solutions of metal cations (Y + and Z + ), rank the metals (X, Y and Z) in terms of reducing agent strength, from lowest to highest.
When metal X is placed in an aqueous solution of Z + , a dark residue forms on the metal.
When metal Y is placed in an aqueous solution of Z + , the metalâs appearance does not change.
When metal X is placed in an aqueous solution of Y + , a dark residue forms on the metal.
Weakest RA Strongest RA

Answers

According to the observations, the ranking of the metals (X, Y, and Z) from weakest to strongest reducing agent strength is: Z ,Y ,X

Based on the observations, we can rank the metals (X, Y, and Z) in terms of reducing agent strength, from lowest to highest:(

Metal Y is the weakest reducing agent. This is because when it is placed in an aqueous solution of Z+, no reaction occurs, indicating that metal Y cannot reduce Z+ ions.

Metal X is a stronger reducing agent than metal Y. This is because when it is placed in an aqueous solution of Z+, a dark residue forms on the metal, indicating that X can reduce Z+ ions to form a solid precipitate.

Metal Z is the strongest reducing agent. This is because it is able to reduce both X and Y when they are placed in aqueous solutions of Y+ and Z+ ions, respectively, to form dark residues on the metals. Therefore, metal Z has the greatest tendency to lose electrons and undergo oxidation, making it the strongest reducing agent among the three metals.

In summary, the ranking of the metals in terms of reducing agent strength, from weakest to strongest, is Y < X < Z.

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Full Question: Based on the following observations for 3 metals (X and Y) and solutions of metal cations (Y + and Z + ), rank the metals (X, Y and Z) in terms of reducing agent strength, from lowest to highest.

When metal X is placed in an aqueous solution of Z + , a dark residue forms on the metal.When metal Y is placed in an aqueous solution of Z + , the metalâs appearance does not change.When metal X is placed in an aqueous solution of Y + , a dark residue forms on the metal.Weakest RA Strongest RA

how do you determine the melting point of an unknown sample without having to raise the temp slowly over a large temp range?

Answers

There are a few alternative methods for determining the melting point of an unknown sample without having to raise the temperature slowly over a large temperature range.

One common method is the "drop-melting point" method. In this method, a small amount of the sample is placed on a watch glass or other suitable surface, and a capillary tube is filled with a few millimeters of the sample. The capillary tube is then inverted and the sample is allowed to drop onto the surface. The temperature at which the sample melts is recorded as the melting point.

Another method is the "microscopic melting point" method, in which a small amount of the sample is placed between two glass slides or other suitable surfaces and observed under a microscope while the temperature is gradually increased. The melting point is recorded as the temperature at which the first signs of melting are observed.

Both of these methods allow for more rapid determination of the melting point of an unknown sample, although they may not be as precise as the traditional slow heating method.

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What is commonly believed to be the cause for periodic glacial advances?.

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Periodic glacial advances have been a natural phenomenon for thousands of years. Scientists have studied various factors that could cause these advances, and one of the commonly believed causes is variations in Earth's orbit and tilt.

The Earth's orbit and tilt go through cyclical changes over thousands of years, which can affect the amount of sunlight and heat that reaches the polar regions. When the tilt of the Earth's axis is at a certain angle, the polar regions receive less sunlight, leading to colder temperatures and more snowfall. This can lead to the growth of glaciers, which can advance over time and cover vast areas.
Another factor that could contribute to periodic glacial advances is changes in ocean currents and temperatures. The oceans play a crucial role in regulating Earth's climate, and fluctuations in ocean currents can affect the distribution of heat and moisture around the planet. This can lead to changes in weather patterns and precipitation, which could contribute to the growth and advancement of glaciers.
Other factors that could influence periodic glacial advances include volcanic activity, variations in atmospheric carbon dioxide levels, and fluctuations in solar radiation. While scientists continue to study these factors, it is clear that periodic glacial advances are a natural part of Earth's climate history, and they will continue to occur in the future.

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What has an odd number of valence electrons, the least electronegative has 7?

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The element with an odd number of valence electrons and the least electronegative element with 7 valence electrons is chlorine (Cl).

Chlorine is a nonmetal in group 17 of the periodic table, also known as halogens. It has 7 valence electrons, meaning it requires only one more electron to complete its octet and achieve a stable electron configuration. Chlorine is less electronegative than other halogens such as fluorine and oxygen, making it more likely to lose an electron in a chemical reaction. Chlorine is commonly used in disinfectants, bleach, and as a component in PVC plastics.

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Which is not true in using acid chloride with an alcohol in the synthesis of an ester? a. gives higher yield d. room temperature reaction b. does not require excess alcohol e. uses acid as catalyst c. byproduct HCl can be easily removed

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The statement which is not true in using acid chloride with an alcohol in the synthesis of an ester is uses acid as catalyst, option E.

Among a group of organic compounds known as esters, alcohols and organic or inorganic acids are produced when ester reactions with water take place. The most typical esters come from carboxylic acids. German scientist Leopold Gmelin coined the word "ester" in the first part of the 19th century.

Esterification is the reaction between carboxylic acids with alcohols in the presence of hydrochloric or sulfuric acids to produce carboxylic acid esters, formula RCOOR′ (R and R′ are any organic combining groups). The alkoxy group (R′O) of the alcohol replaces the hydroxyl group (OH) of the carboxylic acid throughout the process.

Hydrolysis is exemplified by the esterification reaction in reverse. Esters can also be created by reacting acid halides, acid anhydrides, or salts of carboxylic acids with alkyl halides or alcohols. By reacting (transesterifying) with an alcohol, carboxylic acid, or a third ester in the presence of a catalyst, one ester can be changed into another.

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What will happen if you add a nonelectrolyte to an aqueous solutions that already contains an electrolyte?

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When a nonelectrolyte is added to an aqueous solution containing an electrolyte, it will not affect the behavior of the electrolyte. The concentration of the electrolyte in the solution will remain the same, and the nonelectrolyte will not dissociate into ions or affect the dissociation of the electrolyte.

However, the addition of the nonelectrolyte may alter the physical properties of the solution, such as its freezing point, boiling point, or osmotic pressure, depending on the properties of the nonelectrolyte. A non-electrolyte is a substance that does not dissociate into ions when dissolved in water or in any other solvent. This means that when a non-electrolyte is dissolved in water, it does not conduct electricity, as it does not have any charged particles (ions) to move around in the solution. Examples of non-electrolytes include sugars (such as glucose and fructose), alcohols (such as ethanol and methanol), and organic molecules (such as urea).

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BCl3 + NH3 ---> Cl3BNH3; What kind of hybrid orbitals are B and N using before and after rxn. (also talk about geometry before and after)

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Before the reaction, boron is using sp² hybrid orbitals, with a tetrahedral geometry. Nitrogen is using sp³ hybrid orbitals as well, with a tetrahedral geometry.

What is Nitrogen?

Nitrogen is a colorless, odorless, and tasteless gas that makes up 78.09% of the Earth's atmosphere. It is an essential element in all living organisms, as it is involved in the production of proteins, DNA and RNA. Nitrogen is found in the form of ammonia and nitrates and is used in the production of fertilizers, explosives, and other nitrogen-based compounds. It is also used in the manufacture of steel and other industrial products.

Before the reaction, Boron (B) is using three sp² hybrid orbitals, and Nitrogen (N) is using three sp³ hybrid orbitals. The geometry of Boron is trigonal planar and the geometry of Nitrogen is tetrahedral.

After the reaction, Boron (B) is still using three sp² hybrid orbitals, and Nitrogen (N) is now using three sp³d hybrid orbitals. The geometry of Boron is still trigonal planar, and the geometry of Nitrogen has changed to trigonal pyramidal.

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If your mobile phase did not work as expected, what mobile phase would you choose instead?

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The choice of mobile phase depends on the specific requirements of the separation or analysis being performed. If a mobile phase is not working as expected, it may be necessary to adjust the composition, pH, or polarity of the mobile phase.

Alternatively, a completely different mobile phase may be needed. For example, if a nonpolar mobile phase does not separate two analytes of interest, a more polar mobile phase may be needed to achieve separation. It is important to consider the chemical properties of the analytes and the stationary phase when selecting a mobile phase. Trial and error may also be necessary to find the optimal mobile phase for a given separation or analysis.

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reviewe the first karyotype you assembled. how does the position of the centromere change among the different chromosome

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A chromatid's centromere is the area that divides it into two arms. The kinetochore, which connects to the spindle fibres' microtubules, is located around the location of the duplicated chromosome. It aids in the correct division of chromosomes.

The centromere, which is located in the centre, separates the chromosome into two equal arms. Chromosome sub-metacentric or submedian centromere: The centromere is located closer to one end of the chromosome or a little off-center on each chromosome.

The four types of chromosomes—metacentric, submetacentric, acrocentric, and telocentric—are differentiated by the position of the centromere. As was already established, the centromere is easily pictured as the most condensed area of a mitotic chromosome.

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The complete question is:

How does the position of the centromere change among the different chromosome?

How does a fractional distillation column differ from a simple distillation column?

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A fractional distillation column is used to separate liquids with a small difference in boiling points, while a simple distillation column is used for separating liquids with a large difference in boiling points.

A fractional distillation column differs from a simple distillation column in terms of their design and functionality. A simple distillation column consists of a single vertical tube with a condenser at the top, where a liquid mixture is heated, and the vapors produced are condensed and collected in a separate container.

On the other hand, a fractional distillation column contains multiple trays or plates, which provide a larger surface area for the vapor to condense and re-evaporate several times. These trays are used to create equilibrium between the vapor phase and liquid phase, which separates the different components in a mixture.

As the vapor rises up through the column, it comes into contact with cooler plates, where it condenses and re-evaporates multiple times, leading to a more efficient separation of components. The temperature gradient in the column is maintained by heating the bottom of the column and cooling the top, allowing the different components to evaporate and condense at their respective boiling points.

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please select the most appropriate answer for the blank: entropy change is defined only along the path of a(n) process path.

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Please select the most appropriate answer for the blank: Entropy change is defined only along the path of Reversible process path.

What is Entropy?

Entropy is a measure of the amount of disorder or randomness in a system. It is also known as the thermodynamic quantity of disorder, or the measure of randomness in a system. Entropy is related to the amount of energy that is unavailable for work. Entropy increases as the universe moves from a state of order to a state of disorder. Entropy is closely related to the second law of thermodynamics, which states that the total entropy of an isolated system can never decrease over time. Entropy is an important concept in many fields, from physics to chemistry and biology, and is used to measure the amount of energy available in a system.

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Complete Question:
Please select the most appropriate answer for the blank: Entropy change is defined only along the path of a(n) ___________ process path. Multiple choice question. Reversible Irreversible Externally reversible Internally reversible

how many mililiters of 0.085 m naoh are required to titrate the following solution to the equivalence point: 35.0 ml of 0.0850 m ch3cooh

Answers

The mililiters of 0.085 m NaOH are required to titrate the following solution to the equivalence point:

HNO₃ + NaOH ⇒ NaNO₃ + H₂O is 424 mLHC₂H₃O₂ + NaOH ⇒ NaC₂H₃O₂ + H₂O is 35.0 mL

The point at which chemically equal amounts of reactants have been combined is known as the equivalence point, also known as the stoichiometric point, in a chemical process. The equivalence point for an acid-base reaction is the point at which, in accordance with the chemical reaction, equal amounts of acid and base would neutralise one another. Simply that the ratio is the same as in the chemical reaction is all that is implied, not necessarily a 1:1 molar ratio of acid to base. It can be located using an indicator, such as methyl orange or phenolphthalein.

The equivalence point is reached when moles of acid equals moles of base.

(a).  HNO₃ + NaOH = NaNO₃ + H₂O

moles of acid (HNO₃) = 40.0 ml x 1 L / 1000 m x 0.900 mol / L = 0.036 mols

volume of base (NaOH) needed = 0.036 mols HNO₃ x 1 mol NaOH/mol HNO₃ x 1 L / 0.0850 mol = 0.4235 L

volume of base (NaOH) = 424 mL (3 sig. figs.)

(b).  HC₂H₃O₂ + NaOH ==> NaC₂H₃O₂ + H₂O

moles of acid (HC₂H₃O₂) = 35.0 ml x 1 L / 1000 ml x 0.0850 mol / L = 0.002975 mols

moles of base (NaOH) needed = 0.002975 mol acid x 1 mol NaOH / mol acid = 0.002975 mols NaOH

volume of NaOH = 0.002975 mols x 1 L / 0.0850 mol = 0.0350 L = 35.0 mL.

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solid barium iodide is slowly added to 125 ml of a sodium phosphate solution until the concentration of barium ion is 0.0463 m. the maximum amount of phosphate remaining in solution is

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According to the question the maximum amount of phosphate remaining in solution is 5.6016 mol.

What is phosphate?

Phosphate is an inorganic chemical compound that contains phosphorus, oxygen and other elements. It is a key component of DNA and RNA, and serves as an important energy source for cells and organisms.

To calculate the maximum amount of phosphate remaining in solution, we need to first determine the amount of barium iodide needed to reach the desired concentration of barium ion.
Using the equation:
Concentration of Barium Ion = Amount of Barium Iodide/Volume of Solution
We can calculate that the amount of barium iodide required is 0.0576 mol.
Next, we need to calculate the amount of phosphate that is consumed when the barium iodide is added. According to the solubility product of barium phosphate, the amount of phosphate that is consumed is equal to the amount of barium iodide added, 0.0576 mol.

Therefore, the maximum amount of phosphate remaining in solution is
125 ml x 0.0463 mol/L - 0.0576 mol
= 5.6016 mol.

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The structure of an amine is shown. A tetrahedral nitrogen atom with a hydrogen atom and a lone pair in the same plane, a CH3 group left of the N and behind the plane and a C H 2 C H 3 group left of the N and in front of the plane. Indicate whether the amine can exist as a pure enantiomer or not.

Answers

Yes, it can exist as a pure enantiomer as this is not optically active; there is no stereocenter in amine structure.

Option B and C  are correct.

What characterizes an enantiomer?

Enantiomers are compounds that are identically connected, mirror images of one another, but not identical to one another. An enantiomer is typically defined as one that cannot be superimposable on its mirror image.

How are enantiomers identified?

The least complex method for distinguishing an enantiomer is to perceive that two particles are perfect representations of one another. Enantiomers must reflect one another. The particles in the picture above reflect over the strong line, which addresses a mirror plane.

Incomplete Question:

The structure of an amine is shown. A tetrahedral nitrogen atom with a hydrogen atom and a lone pair in the same plane, a CH₃  group left of the N and behind the plane and a C H₂ C H₃ group left of the N and in front of the plane. Indicate whether the amine can exist as a pure enantiomer or not.Indicate whether the amine can exist as a pure enantiomer or not.

A. No, it interconverts with its enantiomer.

B.Yes, it can exist as a pure enantiomer.

C.This is not optically active; there is no stereocenter

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which could best be separated into simpler substances by filtration and evaporation? group of answer choices

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A. Hi! To best separate a mixture into simpler substances using filtration and evaporation, you should consider a solution containing a solid and a liquid. Filtration can effectively separate the solid particles from the liquid, and then evaporation can be used to remove the liquid, leaving the solid residue behind. This method works well for mixtures like saltwater, where the salt can be separated from the water through these two processes.

B. A mixture of solid and liquid components could best be separated into simpler substances by filtration and evaporation. Filtration is the process of separating solid particles from a liquid by passing it through a filter, whereas evaporation involves heating a liquid to its boiling point, causing it to turn into a gas and leaving behind any solid components. This method is effective for separating mixtures of solids and liquids, such as in the case of separating salt from saltwater or coffee grounds from coffee. However, it is important to note that not all mixtures can be separated through filtration and evaporation alone and may require other separation methods.

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To obtain the UV spectrum of sunscreen ingredients, we dissolved the samples in:
ethanol
c. water e. isopropyl alcohol b. hexanes d. methano

Answers

To obtain the UV spectrum of sunscreen ingredients, we dissolved the samples in: e. isopropyl alcohol.

The UV variety extends from one hundred–four hundred nm, and the seen spectrum degrees from four hundred–seven hundred nm. The UV variety usually extends from one hundred to four hundred nm, with the seen variety from about four hundred to 800 nm. UV-Vis spectroscopy can consequently be used to observe conformational adjustments in molecules inclusive of monoclonal antibodies or proteins. ​ UV-Vis is frequently utilized in protein and nucleic acid thermal soften analyses, and pattern temperature manage is key. Beer Lambert's law offers the relation among Energy absorption and Concentration.

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Write the balanced molecular equation for the complete combustion of 1-butanol.

Answers

The molecular formula for 1-butanol is C4H9OH. The balanced molecular equation for the complete combustion of 1-butanol can be written as:

C4H9OH + 6O2 → 4CO2 + 5H2O

What is Molecular Equation?

A molecular equation is a balanced chemical equation that shows the complete chemical formulas of all reactants and products in a chemical reaction. In a molecular equation, the reactants are listed on the left side of the equation, and the products are listed on the right side. The coefficients in the equation indicate the relative amounts of each reactant and product in the reaction.

This equation shows that 1-butanol (C4H9OH) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). The coefficients are balanced to ensure that the number of atoms of each element is the same on both sides of the equation.

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what will native vs denaturing gel electrophoresis tell us? for mRNA

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Native gel electrophoresis and denaturing gel electrophoresis are two techniques used to separate and analyze mRNA. Native gel electrophoresis separates mRNA based on its size and shape, while denaturing gel electrophoresis separates mRNA based on its nucleotide sequence.

Native gel electrophoresis is useful for determining the size and conformation of mRNA molecules, as well as identifying any potential modifications. It can also be used to compare the expression levels of different mRNA molecules.

Denaturing gel electrophoresis, on the other hand, is used to determine the nucleotide sequence of mRNA molecules. By treating the mRNA with chemicals that break down the hydrogen bonds between the base pairs, the mRNA is "denatured" and its single-stranded sequence can be analyzed.

Overall, the choice between native and denaturing gel electrophoresis will depend on the specific research question being addressed. Native gel electrophoresis is useful for examining the physical properties of mRNA molecules, while denaturing gel electrophoresis is better suited for sequencing and identifying specific mRNA sequences.
Hi! Native and denaturing gel electrophoresis are two techniques used to analyze biomolecules like mRNA. Native gel electrophoresis maintains the original structure of the molecule, allowing us to observe its size, shape, and charge. It helps in determining the functional state of mRNA and detecting interactions with other molecules.

On the other hand, denaturing gel electrophoresis disrupts the secondary and tertiary structure of mRNA by using chemicals or heat. It separates molecules solely based on size, as all molecules will have a uniform charge-to-mass ratio after denaturation. This technique provides a more accurate measurement of the mRNA's size, allowing for detection of small differences between similar-sized molecules.

In summary, native gel electrophoresis gives insights into mRNA's functional state and interactions, while denaturing gel electrophoresis allows for precise size determination and detection of small differences among molecules. Both techniques complement each other to provide a comprehensive understanding of mRNA structure and function.

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which of these properties is/are characteristic(s) of gases? group of answer choices formation of homogeneous mixtures regardless of the nature of gases relatively large distances between molecules high compressibility a and b. a, b, and c

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The properties that are characteristic of gases include: the formation of homogeneous mixtures regardless of the nature of gases, relatively large distances between molecules, and high compressibility.

Gases exhibit the following characteristics:

1. Formation of homogeneous mixtures regardless of the nature of gases - Gases tend to mix uniformly and completely when combined, forming a homogeneous mixture.

2. Relatively large distances between molecules - In gases, the particles (molecules or atoms) are spaced far apart, which allows them to move freely.

3. High compressibility - Gases can be compressed into a smaller volume due to the large spaces between their particles.

All these properties are characteristic of gases and distinguish them from solids and liquids.

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Calculate the cell potential for a cell based on the reaction below: Cu(s) + 2Ag+(aq) ⟶ Cu2+(aq) + 2Ag(s) when the concentrations are as follows: [Ag+] = 0.7 M [Cu2+] = 0.9 M (The temperature is 25°C and E° = 0.4624 V.)

Answers

The cell potential for a cell is 0.454 V, The Nernst equation is given as:

Ecell = E°cell - (RT/nF) * ln(Q)

Where,

Ecell is the cell potential, E°cell is the standard cell potential, R is the gas constant (8.314 J/K/mol), T is the temperature in Kelvin (298 K), n is the number of electrons transferred in the balanced redox reaction, F is the Faraday constant (96,485 C/mol), and Q is the reaction quotient.

To calculate the cell potential for the given reaction, we first need to determine the reaction quotient Q using the given concentrations of [Ag+] and [Cu2+]. Using the balanced equation:

Cu(s) + 2Ag+(aq) ⟶ Cu2+(aq) + 2Ag(s)

The reaction quotient can be calculated as:

Q = [Cu²+]/[Ag+]²

= (0.9)/(0.7)²

= 1.836

Substitute the respective values in the above equation.

Ecell = 0.4624 V - (8.314 J/K/mol * 298 K / (2 * 96,485 C/mol)) * ln(1.836)

= 0.454 V

Therefore, the cell potential for the given cell is 0.454 V.

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Calculate the density, in g/l, of n2 gas at 35°c and 0. 98 atm pressure.

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The density of N₂ gas at 35°C and 0.98 atm pressure is approximately 1.19 g/L.

To calculate the density of N₂ gas, we can use the ideal gas law, which is given by the equation PV=nRT, where P is the pressure, V is the volume, n is the amount of substance in moles, R is the ideal gas constant, and T is the temperature.
1. Convert the temperature from Celsius to Kelvin: T(K) = 35°C + 273.15 = 308.15 K
2. Use the molar mass of N₂ (28.02 g/mol) and the ideal gas constant R (0.0821 L·atm/mol·K)
3. Rearrange the ideal gas law equation to find the density (ρ): ρ = (PM)/(RT)
4. Plug in the values: ρ = (0.98 atm * 28.02 g/mol) / (0.0821 L·atm/mol·K * 308.15 K)
5. Calculate the result: ρ ≈ 1.19 g/L
So, the density of N₂ gas at 35°C and 0.98 atm pressure is approximately 1.19 g/L.

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