Retention times will increase if 90% methanol were used instead of 65%. The amount of solvents completely decides the elution of compounds in HPLC.
How is the retention and elution affected in the HPLC?The elution order of solutes in HPLC is governed by the polarity. For a normal-phase separation, solute of lower polarity spends less time in the polar stationary phase and elutes before a solute that is more polar.
Polar compounds in the mixture passing through the column will be adsorbed more strongly to the polar silica than nonpolar compounds, which passes more quickly through the column and will be eluted quicker than polar ones.
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determine the nuclide that (a) undergoes electron capture to produce 7li, and (b) undergoes alpha decay to form 238u. (1 pt)
The nuclide that (a) 7 Be undergoes electron capture to produce 7li, and (b) 234 Th undergoes alpha decay to form 238u.
(a) The nuclide that undergoes electron capture to produce 7Li is 7Be. 7Be is a stable nuclide with atomic number 4 and mass number 7. It can undergo electron capture, in which one of its inner-shell electrons is captured by the nucleus, resulting in the formation of a new nuclide with one fewer protons and one fewer neutrons. In this case, 7Be captures an electron to form 7Li, which has atomic number 3 and mass number 7.
The general equation for the electron capture reaction is:
7Be + e- ---> 7Li + ν
where e- is an inner-shell electron, ν is a neutrino, and the arrow indicates the direction of the reaction.
(b) The nuclide that undergoes alpha decay to form 238U is 234Th.
234Th is a radioactive nuclide with atomic number 90 and mass number 234. It can undergo alpha decay, in which it emits an alpha particle (consisting of two protons and two neutrons) to form a new nuclide with two fewer protons and two fewer neutrons. In this case, 234Th undergoes alpha decay to form 238U, which has atomic number 92 and mass number 238.
The general equation for the alpha decay reaction is:
234Th ---> 238U + α
where α is an alpha particle and the arrow indicates the direction of the reaction.
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For the gaseous equilibrium represented below, it is observed that greater amounts of PCl3 and Cl2 are produced as the temperature is increased. PCl5(g) ↔ PCl3(g) + Cl2(g) (c) If He gas is added to the original reaction mixture at constant volume and temperature, what will happen to the partial pressure of Cl2? Explain. (d) If the volume of the reaction mixture is decreased at a constant temperature to half the original volume, what will happen to the number of moles of Cl2 in the reaction vessel? Explain. Note: Briefly explain and answer c and d
For the gaseous equilibrium that is given, the following applies:
1. If He gas is added to the original reaction mixture at constant volume and temperature, the partial pressure of Cl₂ will decrease.
This is because the introduction of He gas at constant volume and temperature will result in an increase in pressure, hence equilibrium will shift to the left where there is a decrease in pressure.
2. If the volume of the reaction mixture is decreased at a constant temperature to half the original volume, the number of moles of Cl2 in the reaction vessel will increase.
This is because a decrease in the volume of the reaction mixture is decreased at a constant temperature will result in a shift in equilibrium to the right where there is an increase in volume.
What is an equilibrium reaction?An equilibrium reaction is a reaction in which the rate of the forward and backward reactions are the same.
The principle that guides equilibrium reactions is the L_e Chatelier's principle which states that equilibrium will shift to neutralize any changes imposed on an equilibrium reaction.
For example, a decrease in volume will favor the reaction side which results in an increase in volume.
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why is a temperature of -280 c impossible?
A temperature of -280°C is impossible because it is below absolute zero which is the lowest possible temperature that can be reached.
Absolute zero is defined as -273.15°C or 0 Kelvin.
what steps are needed to prepaare phenylacetylene, c6h5c≡ch, from c6h5ch2ch2br. be sure to answer all parts.
We are asked to devise a synthesis of phenylacetylene, \text{C}_6\text{H}_5\text{C}\equiv\text{CH}C6 h5 c=ch
What is the purpose of phenylacetylene?Application. In a study, phenylacetylene was utilized to examine the process of product generation during the phenylacetylene oxidative carbonylation reaction, which was catalyzed by palladium. When trimethylaluminum is present, terminal acetylene is employed to transform nitrones into alkynyl hydroxyl amines.
What Is phenylacetaldehyde water soluble?The parent chemical of the phenylacetaldehyde class of molecules, phenylacetaldehyde is an aldehyde made up of acetaldehyde with a phenyl group.
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some polyprotic acids can form more than one salt depending on the number of h's that react with base. write the balanced net ionic reaction between koh and h2so4 (react both h's).
Some polyprotic acids can form more than one salt depending on the number of h's that react with base.
Hence, the balanced chemical equation is:
[tex]H_2SO_4+2KOH \to K_2SO_4+2H_2O[/tex]
This is an example of a double replacement (double displacement) reaction.
What are polyprotic acids?
Polyprotic Acid is a chemical that can donate more than one proton. Diprotic and Triprotic are two distinct varieties of polyprotic acid that can, respectively, donate two and three protons.Depending on how frequently dissociation takes place, polyprotic acids have a variety of dissociation constants, including Ka1, Ka2, Ka3, and equivalence points.Given its ability to provide an aqueous solution with two hydrogen atoms, sulfuric acid (H2SO4) is a polyprotic acid. In particular, the fact that sulfuric acid has two hydrogen atoms available makes it a diprotic acid.A triprotic acid is orthophosphoric acid (H3PO4).To know more about polyprotic acids, click the link given below:
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Draw lewis structure for C5H12
The Lewis structure for C5H12 looks like this:
H - C - H
| | |
H - C - H
| | |
H - C - H
A Lewis structure is a way of representing the covalent bonds in a molecule. To draw the Lewis structure for C5H12, we first need to determine the number of valence electrons in the molecule. The valence electrons are the electrons in the outermost energy level of an atom, and they are the ones involved in chemical bonds.
In the case of C5H12, carbon has four valence electrons and hydrogen has one. This means that the molecule has a total of 5 x 4 + 12 = 32 valence electrons.
To draw the Lewis structure, we start by placing the five carbon atoms in the center of the structure, forming a pentagon. We then connect each carbon atom to the other four using single bonds, which represent two electrons each. This accounts for 20 of the 32 valence electrons.
Next, we add the remaining 12 valence electrons by placing hydrogen atoms on the outside of the pentagon, one on each side. Each hydrogen atom forms a single bond with a carbon atom, accounting for the remaining 12 valence electrons.
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write the chemical formula for the conjugate acid of the aniline, c6h7n. (enter the elements in the order: c, h, n, o.)
The chemical formula for the conjugate acid of the aniline: Phenylammonium ion (C₆H₅NH₃⁺).
What is conjugate acid?Conjugation, also known as a verbal paradigm, derives from the Latin meaning "link together" and relates to the inflection of verbs for the person, number, tense, and mood.
A conjugate acid has one extra H atom and one more (+) ve charge than the base from which it was created. When an acid contributes a proton to a base, conjugate acid is created. A conjugate base has one fewer H atom and one more (-) ve charge than the acid from which it was produced.
Thus, the chemical formula for the conjugate acid of the aniline: Phenylammonium ion (C₆H₅NH₃⁺).
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compare the conjugate bases of these three acids. acid 1: sulfurous acid , h2so3 acid 2: phosphoric acid , h3po4 acid 3: hydrogen sulfide , hs- what is the formula for the strongest conjugate base ?
The formula for the strongest conjugate base is HCO₃⁻ (hydrogen carbonate).
The chemical formula for the most efficient conjugate base is HCO₃⁻, which refers to the compound hydrogen carbonate. When we analyze the relative acidic strength of Hf, H₂CO₃, and hydrogen sulfide (H₂S), we find that F⁻ has the lowest relative acidic strength. Since we already know that strong acids have the weakest conjugate bases, this leads us to the conclusion that F⁻ is the weakest conjugation base.
As a result, HCO₃⁻ possesses an effective conjugate base. Hydrogen carbonate is an intermediate form that results from the deprotonation of H₂CO₃. It is also known as bicarbonate, and it is amphoteric in its natural state. Bicarbonate plays an essential metabolic role in the system that maintains the physiological pH buffering balance.
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This rock known as balanced rock sits on thin spike of rock in a canyon in Idaho explain the forces that keep the rock balanced on its tiny pedestal
Answer:
Action force and Reaction force
Explanation:
The action force which is the balanced rock pushing down due to gravity and the reaction force pushing the equal amount of force. These two things are stated in Newtons third law, where he states that "Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first." Also, he states that "all forces acts in pairs," meaning that every force exerted, there is an opposite force on the first
Why noble gases are non-reactive?
Noble gases are non-reactive due to having a valence outermost shell.
In the field of chemistry, noble gases can be described as gases that are present in group 8 of the periodic table of elements.
All noble gases have their outermost shell that is full. This means that the outermost shell has valence electrons in its outermost shells and their valency is complete. Hence, noble gases do not take or lose electrons.
As there is no exchange of electrons for noble gases due to their achieved valency of outermost shells, hence noble gases are non-reactive. No other group of elements in the periodic table has outermost valence electrons and hence shows some kind of reactivity.
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Which of the following transitions have minimum wavelengthA n4→n1
B n2→n1
C n4→n2
D n3→n1
The right answer is B, where n is changed from 3 to 1. A transition's energy release is given by E 36Z2(1n211n22)eV.
What in spectroscopy is a transition?
When an electron is promoted from a full orbital to an empty orbital, transitions take place. In -bonds, sigma electrons are found.
The relationship between electron transitions and wavelength
Planck's equation, E = h, relates the energy change connected to a transition to the wavelength of the electromagnetic wave. The formula c = links the wave's frequency to both its wavelengths and the light's speed.
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a mixture of 100 g of k2cr2o7 and 200 g of water is stirred at 60 oc until no more of this salt dissolves. the resulting solution is decanted (poured off) and cooled to 20 oc. what mass of k2cr2o7 crystallizes from the solution during the cooling?
A mixture of 100 g of K2Cr2O7 and 200 g of water is stirred at 60 OC until no more of this salt dissolves. 33% mass of K2Cr2O7 crystallizes from the solution during the cooling.
To solve this problem, you need to use the solubility curve for potassium dichromate (K2Cr2O7) in water. A solubility curve is a graph that shows the relationship between the temperature of a solution and the amount of a substance (in this case, potassium dichromate) that will dissolve in the solution. Since the mixture you have consists of 100 grams of potassium dichromate and 200 milliliters of water, you can use the solubility curve to determine how much potassium dichromate will dissolve in the mixture at 60 degrees Celsius.
At a temperature of 60 degrees Celsius, the solubility of potassium dichromate in water is approximately 150 grams per 100 milliliters of water. Since the mixture you have consists of 100 grams of potassium dichromate and 200 milliliters of water, you can use the solubility curve to determine how much potassium dichromate will dissolve in the mixture.
Since the volume of water in the mixture is 200 milliliters, this means that approximately 67% of the potassium dichromate in the mixture will dissolve at 60 degrees Celsius. The remaining 33% of the potassium dichromate will not dissolve in the mixture and will remain as a solid.
When the mixture is cooled to 20 degrees Celsius, the solubility of potassium dichromate in water decreases. This means that some of the potassium dichromate that was dissolved in the mixture at 60 degrees Celsius will crystallize out of the solution as the temperature decreases.
To determine the mass of potassium dichromate that crystallizes from the solution during the cooling, you can use the following equation:
Mass of potassium dichromate crystallized = (Mass of potassium dichromate in mixture - Mass of potassium dichromate dissolved at 60 degrees Celsius) x (1 - Solubility at 20 degrees Celsius / Solubility at 60 degrees Celsius)
Substituting in the values from the problem, we get:
Mass of potassium dichromate crystallized = (100 grams - (100 grams x 67%)) x (1 - (Solubility at 20 degrees Celsius / 150 grams)
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Where is blood under greatest pressure? A) arteries B) capillaries C) veins D) lymph vessels
The greatest blood pressure is found in
A) Arteries
Arteries are the blood vessels that take oxygenated blood from the heart to other parts of the body. Though these are the primary blood vessels that carry blood and have a considerable diameter they have the highest blood pressure due to the force with which the blood is pumped by the heart
Capillaries have a diameter of 8-10μm such that only RBC's and small proteins are able to pass through them while the white blood cells (WBC's ) move around as extracellular fluid.
Veins are primary blood vessel that carry the deoxygenated blood from various parts of the body to the heart. The blood pressure present in veins is comparatively lower in comparison to that of arteries as they transport blood against the force of gravity.
Lymph vessels are primary vessels that allow for the transport of Lymphatic fluid. Though being similar to arteries they do not have high pressure due to the lack of the force exerted by the heart.
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Balance the following nuclear equations
There can be emissions of radiations like gamma radiation. There can be emission of particles too like alpha particle. Therefore, the blanks can be filled using ₁H¹ and ₁₅P³⁰ .
What is nuclear decay?Nuclear decay is process in which the radioactive element releases particles or radiations. Alpha particles is ⁴₂He. Alpha particle is nothing but helium particle.
The balanced nuclear equation for the given reaction can be given as
₃Li⁷ + ₁H¹ [tex]\rightarrow[/tex] 2 ₂He⁴
₁₃Al²⁷ + ₂He⁴ [tex]\rightarrow[/tex] ₁₅P³⁰ + ₀n¹
Therefore, the blanks can be filled using ₁H¹ and ₁₅P³⁰
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Determine 1 the diagram represent a chemical or physical change? Explain your answer
Determine one the diagram represent a chemical or physical change is given below.
A physical change can be recognized if it is reversible, especially if it involves a phase transition. For instance, if water is frozen into an ice cube, it can be melted back into water. The modification reversible. Not all physical alterations are simple to undo. (With few exceptions),The color change, bubbles form, or a precipitate form. All of them point to a chemical alteration rather than a physical one. Is the final product's chemical composition the same as it was before the change. The change is physical if the response is yes. If the response is no, a chemical change has occurred. A physical reaction and a chemical reaction differ in composition. In a chemical process, the makeup of the components changes; in a physical change, the appearance, smell, or straightforward exhibition of a sample of matter changes without changing its composition. Despite the fact that we refer to them as physical "reactions," nothing is actually changing. A change in the substance in question's elemental composition is necessary for a reaction to occur. Therefore, from now on, we will simply refer to bodily "reactions" as physical changes.
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a 20.0-ml sample of hydrochloric acid (hcl) is titrated and found to react with 42.6 ml of 0.100 m naoh. what is the molarity of the hydrochloric acid solution?
The molarity of the hydrochloric acid solution in the reaction between NaOH and HCl, 1 mole of NaOH reacts with 1 mole of HCl. 1 NaOH + 1 HCl → 1 NaCl + 1 H2O (Mole ratio of NaOH to HCl is 1:1) • The concentration of the NaOH was 0.1 M, or 0.1 moles/liter.
What is molarity?
Molarity (M) is the quantity of a substance in a given extent of solution. Molarity is described because the quantity of moles of solute consistent with liter of solution. Molarity is likewise known as the molarity of a solution.
Therefore, The molarity of the hydrochloric acid solution in the reaction between NaOH and HCl, 1 mole of NaOH reacts with 1 mole of HCl. 1 NaOH + 1 HCl → 1 NaCl + 1 H2O (Mole ratio of NaOH to HCl is 1:1) • The concentration of the NaOH was 0.1 M, or 0.1 moles/liter.
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fluorine gas and water vapor react to form hydrogen fluoride gas and oxygen. what volume of oxygen would be produced by this reaction if of fluorine were consumed?
Hydrogen fluoride gas & oxygen are produced in the Vo2=1.5m3 fluorine and water vapor reaction. if fluorine were consumed, how much oxygen would be generated by this reaction?
What distinguishes hydrofluoric acid from hydrogen fluoride?
APPEARANCE: Below 67°F (19.4°C), hydrogen fluoride is indeed a colorless seething liquid or a colorless vapor. Hydrofluoric acid, the colorless liquid that is visually indistinguishable to water at low concentrations, is created when hydrogen fluoride and water are mixed.
What components make up hydrogen fluoride?
A hydrogen atom as well as a fluorine atom combine to form the colorless chemical known as hydrogen fluoride. Hydrofluoric acid is the name given to it when dissolved in water. In industrial contexts, hydrogen fluoride is utilized to produce refrigerants in amounts up to 60%.
Briefing:
Vo2=1/2*H2O
Vo2=1/2*3.0
Vo2=1.5m3
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10. Calcium sulfide (CaS) is insoluble in water: Why ? would positive because the ion-C ~dipole interactions are If CaS were to dissolve. 4H very weak compared to the ion-ion interactions being overcome: Salts containing Ca?* are never soluble in water: The covalent bonds in CaS would require a great deal of energy t0 overcome upon dissolving. If CaS were t0 dissolve, 4S would be negative because the possible arrangements for the water molecules would decrease:
Calcium is a exceptionally reactive steel that reacts violently in a much less way with water. When calcium reacts with water, it has a tendency to displace hydrogen from the water.
Along with this, it produces bubbles of hydrogen fueloline in addition to calcium hydroxide. Therefore, an appropriate choice to this query is (D) (iii) and (iv).This is a binary compound and it's far an ionic compound, that is polar ionic compounds which might be polar in nature need to be quite simply soluble in water, however this calcium sulfide is stated to be insoluble in water. So the motives for that is for an ionic compound, that is collar to be soluble.
The calcium carbonate will dissolve withinside the acid generating CO2 fueloline. It will now no longer dissolve in natural water.If CaS had been to dissolve, AH could be high-quality due to the fact the ion-dipole interactions are very vulnerable as compared to the ion-ion interactions being overcome.
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predict whether the so2 and so3 are polar or nonpolar molecules.
SO2 is polar and SO3 is non - polar because of substituent differences and especially because of geometry.
What are polar and non polar molecules?When things are different at each end then we call them as polar. Some molecules have both positive and negative ends, then we call them polar. If they don't have then we call them non-polar. Things that are polar attract and repel each other.
As SO2 is bent, therefore the dipoles do not cancel and the molecule is polar. The difference in electronegativity between sulfur and oxygen is enough for dipole moments to form but the geometry of sulfur trioxide cancels their effects, making the molecule a nonpolar.
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predict the major product for the reaction. the starting material is a five carbon ring with a double bond between carbons 1 and 2. there is a methyl substituent on carbon 1. this reacts with h b r and peroxide. draw the major product.
The major product for the reaction. the starting material is a five carbon ring with a double bond between carbons 1 and 2. there is a methyl substituent on carbon 1.reacts with HBr and peroxide form 1-bromo2-methy cyclopentane.
The a five carbon ring with a double bond between carbons 1 and 2 , the methyl is substituted on carbon one the compound in 1-methyl cyclopentane. the reaction with HBr proceeds with the free radical mechanism because peroxide form hydroxide radical.
H₂O₂ -----> OH° + OH°
OH° + H - Br ----> Br° + H₂O
the product form in the reaction is the 1 - bromo-2- methyl cyclopentane.
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Why do some bodies in the Solar System maintain countless well-preserved indications of impacts on their surface
even after many millions of years? Give some examples and explain in detail how at least 2 factors contribute to this
Answer:
There are several factors that contribute to the preservation of impact craters on the surface of bodies in the Solar System.
One factor is the lack of erosion or weathering on these bodies. Many of the bodies in the Solar System, such as the Moon and many of the outer planets' moons, do not have atmospheres or hydrospheric systems (like oceans, lakes, or rivers) that can erode or weather the surface over time. This means that the surface of these bodies is not subjected to the same types of processes that can wear away or smooth out surface features on Earth. As a result, impact craters and other surface features can remain well-preserved for millions of years.
Another factor that can contribute to the preservation of impact craters is the presence of a surface layer of material that is resistant to erosion. For example, on the Moon, the surface is covered by a layer of fine-grained dust called regolith, which is made up of small rocks and particles that have been ground up by impact and other processes. This regolith layer is relatively soft and easily disturbed, but it also acts as a protective layer that can preserve the underlying surface features. Similarly, on some of the outer planets' moons, there may be a layer of ice or other materials that can act as a protective layer and preserve impact craters and other surface features.
Examples of bodies in the Solar System that have well-preserved impact craters include the Moon, Mars, and many of the outer planets' moons, such as Europa and Ganymede. The lack of erosion and the presence of protective surface layers on these bodies have allowed them to maintain countless well-preserved indications of impacts on their surfaces even after many millions of years.
Explanation:
To solve this, we must know each and every concept behind solar system. Therefore, impact craters enable scientists to investigate the geological history of a planet.
What is solar system?The Solar System is composed of the Sun and the objects that orbit it. It was created by the gravitational collapse of a massive interstellar molecular cloud 4.6 billion years ago. The Sun contains the vast bulk of the system's mass (99.86%)
Several processes contribute to the preservation of impact craters on the surfaces of Solar System worlds. The absence of erosion or weathering on these bodies is one cause. Another aspect that can aid in the preservation of impact craters is the existence of an erosion-resistant surface layer of material.
Therefore, impact craters enable scientists to investigate the geological history of a planet.
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draw the enantiomer of (s)-2-bromo-2-chlorobutane shown below. it may help to use molecular models.
Enantiomers are pairs of compounds with exactly the same connectivity but opposite three-dimensional shapes.
What is a enantiomer?
In chemistry, an enantiomer (also called an optical isomer, enantiomer, or optical antipode) is one of two stereoisomers that are not superimposable on their own mirror image. Enantiomers are similar to the right and left hands and cannot be superimposed when looking at the same face. No amount of reorientation will align the four unique groups (see Chirality (Chemistry)) on the chiral carbons exactly. The number of stereoisomers a molecule has can be determined by the number of chiral carbons it has. Stereoisomers include both enantiomers and diastereomers.
Like enantiomers, diastereomers have the same molecular formula and are not superimposable, but they are not mirror images of each other.
Therefore, Enantiomers are pairs of compounds with exactly the same connectivity but opposite three-dimensional shapes.
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will hcl (g) or nacl (s) be more soluble in the solvent ch3och3? why? multiple select question. nacl (s) will be more soluble in ch3och3. ion-dipole forces in a nacl solution are more likely to overcome solute-solute interactions than dipole-dipole forces in a hcl solution. the dipole-dipole forces in an hcl solution are similar in strength to the dipole-dipole forces between ch3och3 molecules. hcl (g) will be more soluble in ch3och3. hcl is capable of hydrogen bonding to ch3och3, whereas nacl is not.
Similar to the dipole-dipole interactions between CH3OCH3 molecules, the dipole-dipole forces in an HCl solution are quite strong. - In CH3OCH3, HCl (g) will be more soluble.
In carbon tetrachloride, which of the following chemicals is most likely to dissolve?This means that whereas non-polar solutes are more soluble in non-polar solvents, polar solutes are more soluble in polar solvents. The non-polar material will therefore be most soluble in CCl4, considering your choice of compounds.
The multiple choice question about the fundamentals of solubility asks, "How does the saying like dissolves like apply?"For a solute to be soluble, it needs to share the same polarity as the solvent. The main message is that a polar solute will dissolve in a polar solvent.
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acetaminophen is insoluble in water, soluble in sodium hydroxide solution, insoluble in hydrochloric acid, and insoluble in dichloromethane. if your panacetin sample contained acetaminophen, where would it be separated in the separation scheme? explain your reasoning.
It would fail at the first step because the acetaminophen and sucrose would stay solid and would not be separated due to both being insouble in DCM.
A method that courts might employ to modify the case management procedure to meet the needs of specific cases is differentiated case management (DCM). DCM offers a method for handling each case in accordance with the amount of time and resources needed from the legal system.
If you simply have a few points or a small budget, the Discrete Control Module (DCM) is the ideal option for controlling equipment at remote locations. You can control up to 16 control relays while keeping an eye on two alarm inputs.
Acetaminophen, usually referred to as paracetamol, is a drug used to treat fever and mild to moderate discomfort. Tylenol and Panadol are examples of popular brand names.
It lowers temperature and eases pain.
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the gas described in parts a and b has a mass of 1.66 grams. the sample is most likely which monoatomic gas?
the sample is most likely which monoatomic gas is 39.92 g/mol if the gas described in parts a and b has a mass of 1.66 grams.
Does CO2 have two atoms or just one?triatomic compound Three atoms make up the molecule, which is what it is. Ozone (O3), water (H2O), carbon dioxide (CO2), etc. are some examples. Monoatomic molecule: These really are electrically uncharged molecules made up of four or more atoms joined together by covalent bonds.
Mass of the gas m = 1.66
The calculated temperature T = 273 + 20 = 293
We have to calculate molar mass to determine the gas
Molar Mass = mRT / PV
M = (1.66 x 8.314 x 293) / (101.3 x 1000 x 0.001)
M = 4043.76 / 101.3 = 39.92 g/mol
How can one recognize monatomic gas?Ans: There are some elements that are monatomic, which indicates that each one of their molecules consists of just one monatom. An example of an atoms element is the gas helium. First comes hydrogen H2, followed by molecules of oxygenation O2 and chlorine Cl2.
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what was the observed major product in the reaction of 1-bromobutane with methoxide?
An example of nucleophilic substitution is this procedure. Additionally, sodium methoxide and (S)-2-bromobutane engage in a bimolecular nucleophilic process in acetone (SN2).
What is meant by a bimolecular example?
The second type of micro process that can result in a chemical reaction is the collision of two particles. Such a process is known as a bimolecular process. A typical example of the a bimolecular process is the NO2+CONO+CO2 reactions involving nitrogen dioxide and carbon monoxide. dioxide.
What do the terms "bimolecular" and "unimolecular" actually mean?
A unimolecular reaction only involves one reactive molecule. Two reactant molecules collide during a bimolecular reaction. A termolecular activity is a straightforward procedure that only involves three molecules.
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ir spectrum of limonene
Infrared radiation light spectrum of limonene - 1 methyl-4-(1 methylethenyl)-cyclohexene.
The study of how electromagnetic radiation is absorbed, emitted, and scattered by atoms and molecules-whether they are in the gaseous, liquid, or solid phase-is known as spectrum spectroscopy. Although the terms light, radiation, and electromagnetic radiation can all be used interchangeably, visible electromagnetic radiation is referred to as light. In Activities 1 and 2, you will learn about various characteristics of electromagnetic radiation. Understanding molecular characteristics and the outcomes of spectroscopic studies requires spectroscopy, which was essential in the development of quantum mechanics. To make the subject more tangible and less abstract and technical, it serves as a "stepping stone" to introduce us to the ideas of quantum mechanics and the quantum mechanical explanation of molecular features. A spectrum is a graph that shows how an atomic or molecular system responds to specific wavelengths of radiation or the intensity of the radiation at those wavelengths. An absorption spectrum shows how much light is absorbed by a material at each wavelength of radiation. The three most popular ways to visualize an absorption spectrum are as a plot with either the transmission (T), absorbance (A), or absorption coefficient on the y-axis and the wavelength on the x-axis. The optical density is another name for the absorbance. If we use the definitions of I0 (amount of light striking a sample), I (amount of light the sample transmits), and d (thickness of the sample).
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Complete question- What is Infrared radiation (IR) spectrum of limestone Draw the graph.
Which of the following 0.1 M aqueous solutions will exert highest osmotic pressure ?
A .NaCl
B. BaCl2
C. MgSO4
D. Al2(SO4)3
Al2(SO4)3 will exert the highest osmotic pressure for the same concentration.
1 molecule each of Al2(SO4)3, BaCl2, NaCl and Na2SO4 will dissociate to provide 5, 3, 2, 3 ions respectively. Thus, Al2(SO4)3 provides maximum number of ions in aqueous solution.
What is Osmotic pressure ?The osmotic pressure is the least amount of pressure that must be applied to a solution in order to stop a semipermeable barrier from allowing a solution's pure solvent to pass through. Additionally, it is described as a measurement of a solution's propensity to absorb its pure solvent through osmosis.
Water cannot pass through a semipermeable membrane due to osmotic pressure. Utilizing the osmotic pressure formula, one may determine the pressure that prohibits osmosis from taking place. Assume that you are preparing a saltwater solution. The mixture of water and salt (solute) will make up the solution (solvent).
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2. Which process best demonstrates a chemical change in distilled water?
A. Freezing the water
B. Separating the water into its
elements
C. Calculating the water's density
D. Dissolving sugar in the water
A chemical change involves breaking or making or chemical bonds and the formation of new products. Thus, the separating water into its elements breaks a chemical bond and it is a chemical change.
What is a chemical change?A chemical change involves breaking or making of chemical bonds and the formation of new products. Whereas, a physical change involves no changes for chemical bonds.
Changes in states, dissolving solutes, freezing etc are physical changes and does not involves formation of new products. Measuring physical quantities are based on these physical changes.
Water when decompose into its constituent elements, it is undergoing a chemical change. Here, elements separated from water are the products of this decomposition reaction. Thus, option B is correct.
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consider the species n2–, n2, and n2+. which of these species will be paramagnetic?
The paramagnetic species in the list are; [tex]N_{2} ^- and N_{2} ^+[/tex]
What is Para magnetism?We know that the term Para magnetism has to do with a situation in which a specie has unpaired electrons. As we fill in the molecular orbitals, we have to look out for the species in which we would have unpaired electrons.
We can see that that the nitrogen molecule cation and the nitrogen molecule anion both have unpaired electrons thus they are paramagnetic. The nitrogen molecule is a diamagnetic specie because it as paired electrons.
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