How much water ml a 8 m solution of naoh should be taken in order to obtain a 100 ml solution with a final concentration of 2.5 m?
Answers
The amount of water that should be taken in order to obtain a 100 ml solution with a final concentration of 2.5 m is: 31.25 ml
To solve this problem, the formula and the procedure that we have to use is:
c1 * v1 = c2 * v2
Where:
c1= concentration of the concentrated solutionv1 = volume of the concentrated solutionc2 = concentration of the diluted solutionv2 = volume of the diluted solutionInformation about the problem:
c1 = 8 mc2 = 2.5 mv2= 100 mlv1=?Applying the dissolution of concentrations formula and clearing the volume of the concentrated solution (v1) we get:
c1 * v1 = c2 * v2
v1 = (c2 * v2)/ c1
v1 = (2.5 m * 100 ml)/ 8 m
v1 = 31.25 ml
What is a solution?In chemistry a solution is known as a homogeneous mixture of two or more components called:
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Related Questions
What two dimensions, in addition to mass, are commonly used by physicists to derive additional measurements? length and width area and mass length and time velocity and time
Answers
In addition to mass, physicists' two commonly used dimensions to derive additional measurements are length and time.
The SI system's fundamental units are those of the basic physical quantities that are not created from other units. There are seven fundamental units, including the meter, kilogram, ampere, and second. Derived units are those which are calculated and expressed with the help of above mentioned fundamental quantities.
The dimensional formula of any quantity is the expression that specifies the powers to which the fundamental units should be raised in order to obtain one unit of a derived quantity. It is written as [M^aL^bT^x] where a, b, and x are the power to which the fundamental quantity is raised.
Therefore the additional two dimensions used by the physicists to derive additional measurements are length and time.
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What did you include in your response? Check all that apply.
Egyptians worked together to build the pyramids.
Quarries and ancient tools suggest that large slabs were created from rock beds.
The slabs were placed on sleds and pulled to the building site.
Oil was poured on the roadway to make the process easier.
This process is depicted in tomb paintings that date back to 1900 BCE.
Answers
All of the above apply.
Egyptians worked together to build the pyramids.
Quarries and ancient tools suggest that large slabs were created from rock beds.
The slabs were placed on sleds and pulled to the building site.
Oil was poured on the roadway to make the process easier.
This process is depicted in tomb paintings that date back to 1900 BCE.
How old are the pyramids in Egypt?The Giza Pyramids were designed to last forever, and they have. About 4,500 years ago, the enormous tombs from the Old Kingdom of Egypt were constructed.The pharaohs of Egypt believed that they would live forever as gods.How were pyramids constructed?The most likely scenario is that the Egyptians used a sloping and surrounding embankment made of brick, earth, and sand that was extended in height and length as the pyramid rose and up which stone blocks were towed using sledges, rollers, and levers.Why were the pyramids built?Pyramids were erected for cultic reasons. Egypt was one of the first civilizations to have this notion. They believed that everyone possessed a second self called the ka.After the death of the physical body, the ka had an everlasting existence.To learn more about pyramids visit:
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What byproduct of fermentation creates the characteristic holes in swiss cheese? select one:
a. carbon dioxide
b. lactic acid
c. ethyl alcohol
d. acetic acid
Answers
The byproduct of fermentation that creates the characteristic holes in swiss cheese is a. carbon dioxide.
Swiss cheese is a cheese made in Switzerland.
Swiss cheese is, usually, a semihard cheese made from cows milk with a characteristic holes.
Fermentation of milk is a metabolic process in which lactic acid and carbon dioxide are produced from sugar lactose:
C₆H₁₂O₆ → CH₃CHOHCOOH + C₂H₅OH + CO₂
Carbon dioxide (CO₂) is a gas. It gets stuck in swiss cheese and it makes bubbles, which make holes.
Fermentation is a way of extracting energy from molecules and it is the oldest metabolic pathway.
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Would silicone breast implants be cov-ered by the ucc article 2 warranties? does implan-tation of silicone gel implants constitute a sale ofgoods by the surgeon?
Answers
Since silicone breast implants need a security and the implanter is required to guarantee and replace the implant fixture by the business or manufacturer in accordance with their rules, silicone breast implants are protected by UCC Article 2 warranties.
As per the mandate, drugs, medications, stents, implants and other consumables and incidentals given to patients during a medical procedure or treatment cannot be considered to be the sale of commodities and are therefore subject to taxation under state laws.
Hence, breast implants are covered under UCC Article 2 warranties and silicone gel implantation does not constitute sale of goods via the surgeon.
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What is the atomic mass of one mole of Na?
_____ g/mole
Answers
Answer:
23g/mole
Explanation:
And whereas one sodium atom has an approximate mass of 23 u, 1 mol of Na atoms has an approximate mass of 23 grams. One mole of a substance has the same mass in grams that one atom or molecule has in atomic mass units.
What is the dominant intermolecular force that determines the solubility of the amine hydrochloride salt of ethyl 4-aminobenzoate in water?.
Answers
The major intermolecular force that governs how soluble ethyl 4-benzoate's amine hydrochloride salt is in water is ion-dipole. In conclusion, (b) is the correct response.
Since water is polar and the amino hydrochloride salt of ethyl amino benzoate will be ionic, ion-dipole will be the predominant intermolecular force.
The electromagnetic forces between molecules of attraction or repulsion that operate between atoms and other types of nearby particles, such as atoms or ions, are examples of intermolecular forces (IMFs), also known as secondary forces.
The strongest intermolecular forces are ion-dipole forces. A powerful dipole-dipole interaction of a hydrogen atom and an extremely electronegative atom, like oxygen, nitrogen or fluorine is known as a hydrogen bond.
The complete question is:
What is the dominant intermolecular force that determines the solubility of the amine hydrochloride salt of ethyl 4-aminobenzoate in water?
a) ion-ion
b) ion-dipole
c) London dispersion
d) hydrogen bonding
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A mixture with h2 and he exerts a total pressure of 0.480 atm. if there is 1.00 g of h2 and 1.00 g of he in the mixture, what is the partial pressure of the helium gas?
Answers
The partial pressure of helium (He) in the mixture containing 1 g of H₂ and 1 g of He is 0.16 atm
What is Partial pressure?
Partial pressure can be explained if each specific gas contributes a part of the total pressure and that part is the partial pressure of that gas.
At first to find Mole For H₂:
Mass of H₂ = 1 g
Molar mass of H₂ = 2 × 1 = 2 g/mol
Mole of H₂ =?
Mole = mass / molar mass
Mole of H₂ = 1/2
Mole of H₂ = 0.5 mole
To find the mole For He:
Mass of He = 1 g
Molar mass of He = 4 g/mol
Mole of He =?
As we know, Mole = mass / molar mass
Mole of He = 1/4
Mole of He = 0.25 mole
Total Mole = Mole of Hydrogen+ Helium
Total mole = 0.5 + 0.25
Total mole = 0.75 mole
Next, we shall determine the mole fraction of He.
Mole fraction = mole / total mole
Mole of He = 0.25 mole
Total mole = 0.75 mole
Mole fraction of He = 0.25 / 0.75
Mole fraction of He = 0.33
To determine the partial pressure of He.
Partial pressure = mole fraction × total pressure
Mole fraction of He = 0.33
Total pressure = 0.48 atm
Partial pressure of He = 0.33 × 0.48
Partial pressure of He = 0.16 atm
Therefore, the partial pressure of helium (He) in the mixture is 0.16 atm
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What is the dissociation ratio of 1st dissociable proton of phosphoric acid at ph2.16, given the pka is 2.16 or ka is 6.92x10-3?
Answers
Phosphoric acid (H3PO4) has three dissociable protons, with the pKa's.
What is Phosphoric acid?With the chemical formula H3PO4, phosphoric acid, also known as orthophosphoric acid, monophosphoric acid, or phosphoric(V) acid, is an inorganic solid that contains phosphorus. Colorless and odorless, phosphoric acid is a substance. In its most common form, an 85% aqueous solution, it appears as a syrupy liquid that is colorless, odorless, and non-volatile. Considering that many fertilizers include it, it is a significant industrial chemical.
Acid makes up the substance. The phosphate ion PO results from the removal of all three H+ ions. H2PO, or hydrogen phosphate, is produced when one or two protons are removed, correspondingly. Organophosphate esters are produced by phosphoric acid.
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Why is the Heisenberg uncertainty principle true at the atomic level?
Answers
The Heisenberg uncertainty principle is true at the atomic level because we cannot simultaneously determine the accuracy of both velocity and the position of a particle.
What is the Heisenberg uncertainty principle?Heisenberg's Uncertainty Principle states that there is inherent uncertainty in the act of measuring a variable of a particle.
The Heisenberg uncertainty principle was found to be contrary to classical Newtonian physics which stipulates that all variables of particles to be measurable to an arbitrary uncertainty given standard equipment.
The Heisenberg uncertainty principle is true at the atomic level because we cannot simultaneously determine the accuracy of both velocity and the position of a particle.
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A compound consists of three times as many moles of chlorine as unknown metal m. Metal m contains 23 electrons and 31 neutrons when it forms this compound. What is the mass number of m?.
Answers
Answer:
57
Explanation:
Two cars A and B are moving with velocities of 10m/s and 6m/s in the same direction respectively. What is the relative velocity of Car A with respect to Car B.
Answers
The relative velocity of Car A with respect to Car B, Vab = 16m/s.
Equation :Given,
Va = 10m/s
Vb = 6m/s
Vab = ?
So,
To find Vab of the car A and car B
We know the car A velocity and as both the car the in same direction so to to know average speed or velocity car B velocity taken in negative.
So,
We can put formula,
Vab = Va - (-Vb)
Vab = 10m/s - (-6m/s)
Vab = 16m/s
What is relative velocity?The velocity of an object when compared to another observer is known as its relative velocity. It is the rate at which one object's relative position changes in relation to another object over time.
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Please help
use bond energies to determine the energy change for the following reaction: H2(g)+ Cl2(g) ⟶ 2HCl(g)
Answers
The heat of reaction is obtained as 190 kJ/mol .
What is the heat of reaction?The term heat of reaction is used to show the energy that is absorbed or emitted in a reaction. Recall that a reaction is exothermic when heat is given out and the reaction is endothermic when heat is absorbed.
In this case;
H- H bond energy = 436 kJ/mol
Cl - Cl bond energy = 242 kJ/mol
H - Cl bond energy = 432 kJ/mol
Then we know that;
ΔH reaction = ∑H products - ∑H reactants
We now have;
ΔH reaction = 2(432 kJ/mol) - [242 kJ/mol + 432 kJ/mol]
ΔH reaction = 864 kJ/mol - 674 kJ/mol
ΔH reaction = 190 kJ/mol
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What is the identity of a 100. 0 g sample of metal that, upon absorbing 4680 j of heat, increases in temperature by 52. 0 °c?.
Answers
Aluminum is a metal whose temperature rises by 52.0 °C when it absorbs 4680 J of heat in a 100 g sample. It has low density, non-toxicity, high thermal conductivity, good corrosion resistance.
The unknown metal has a mass (m) of 100.g and absorbs 4680 J of heat (Q) resulting in a temperature rise of 52.0 °C (ΔT).
It has low density, non-toxicity, high thermal conductivity, good corrosion resistance, and can be quickly cast, machined, and formed. Non-magnetic and non-flammable. It is the second most malleable metal and the sixth most malleable metal.
Aluminum is a metal with a specific heat capacity of 0.900 J/g.°C.
Specific heat, the amount of heat required to raise 1 gram of a substance by 1 degree Celsius. The units for specific heat are usually calories or joules/grams/Celsius.
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What happens if some ethyl alcohol of density 790 kg/m3 is poured into the container after the ice cube has melted?
Answers
The layer of ethyl alcohol forms on the surface if some ethyl alcohol is poured into the container after the ice cube has melted.
The density of a substance is its mass per unit volume.
The SI derived unit for density is the kilogram/cubic meter, but chemist usually use gram per cubic centimeter.
Ethyl alcohol has lower density of water, so it would form on the surface.
The density of the water is an around 1000 kg/m³.
Mass is a fundamental measure of the amount of matter in the object.
Volume is the amount of space that a substance occupies.
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5g of copper(II)sulphate crystals are dissolved in water to form aqueous copper(II)sulphate solution. All the solution is then reacted with a 1.5 mol/dm³ of sodium hydroxide solution. A blue precipitate (solid) of copper(II)hydroxide was formed along with a colorless solution, sodium sulphate.
CuSO4 (aq)+ 2NaOH (aq) → Cu(OH)2 (s) + Na₂SO4 (aq)
1. Calculate the mass of the precipitate, Cu(OH)2 formed.
2. Calculate the volume of NaOH needed to react with 5 g of copper(II)sulphate.
3. Calculate the concentration (in mol/dm³) of sodium sulphate when 20 cm³ was formed.
Answers
Calculate the amount of substance of Cu(OH)2, then multiply the molar mass of Cu(OH)2.
2. Calculate the amount of substance of NaOH. The concentration of NaOH is 1.5 mol/dm^3. Volume = Concentration/amount of substance.
3. cm^3dm^3
Calculate the mount of substance (Na2SO4).
Concentration = amount of substance/volume
The complete steps are as follows：
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Answers
Consider a sealed 1 litre container which holds room air at standard atmospheric pressure. if the container is compressed to a volume of 0.5 litres, what would be the partial pressure of oxygen (po2)?
Answers
Partial pressure = total pressure * volume of gas.
Partial pressure of oxygen (po2) = 1*0.5 = 0.5 atm L
what is partial pressure?
According to Dalton's Law of Partial Pressure, the total pressure of a gas mixture is equal to the sum of the partial pressures of all the constituent gases that make up the mixture. Dalton's Law of Partial Pressure has a straightforward equation.
It claims that the overall pressure exerted by the combination of non-reactive gases is equal to the sum of the partial pressures of the various gases. The pressure applied by each individual gas in a gas mixture is referred to as partial pressure.
Partial pressure = total pressure * volume of gas.
Thus, given here,
volume = 0.5 l
Pressure = 1 atm at STP
Therefore, partial pressure of oxygen = 1*0.5 = 0.5 atm L
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Which reaction pathways shows the effect a catalyst (black) might have on an uncatalyzed reaction (gray)?
Answers
Option D) is the correct option. The role of the catalyst is to provide a new pathway for the reaction to take place which has lower activation energy.
The function of the catalyst is to change the rate of reaction without interfering with the reaction itself or without getting consumed in the reaction itself.
Catalyst only affects the activation energy of the reaction and does not change the enthalpy difference of the reaction. In other words, the final and initial energy of the product and reactant respectively remains the same even in presence of the catalyst.
In options C) and B) the final and initial energy of the reaction is different for both pathways, hence these are incorrect.
In option A) the activation energy of the uncatalyzed reaction is less than the catalyzed one which is not possible.
Therefore Option D) is the correct reaction pathway showing the effect of catalyst on an uncatalyzed reaction.
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Your question was incomplete. Please check below the full content
When compounding a sterile product, you should keep all supplies and manipulations at least ________ from all walls (including the filter) and the front edge of the hood.
Answers
When compounding a sterile product, you should keep all supplies and manipulations at least 6 inches within the hood from all walls (including the filter) and the front edge of the hood.
What does a sterile compounding room mean?
A well-lit buffer space, an ante area, a storage area for sterile supplies and products, and both are secondary engineering controls are all included in the sterile compounding area. An space where a PEC is situated and where operations like preparation, compounding, and staging of CSPs take place is referred to as a buffer area (or "cleanroom").
When preparing a sterile product, you must keep all materials and operations at least 6 inches away from the hood's front edge, all walls (including the filter), and all manipulations.
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If the fractional conversion in an ester interchange reaction is 0.99999, what would be the average degree of polymerization (pn or dp) of the polyester produced?
Answers
The fractional conversion in an ester interchange reaction is 0.99999
The average degree of polymerization (pn or dp) of the polyester produced = 0.99999/1 *100 = 99.999
What is degree of polymerization?
The quantity of monomer units in the polymer is known as the degree of polymerization (DP or Xn). It is determined as the molecular weight of the repeat unit divided by the molecular weight of the polymer. The two primary methods for measuring DP are number average DP and weight average DP.
This quantity of repeating units varies based on the type of polymer and its molecular weight and aids in determining the physical and chemical properties of a polymer. The degree of polymerization (DP), or the number of repeating units, is therefore calculated and is crucial in the polymer business.
The overall average degree of polymerization (pn or dp) of the polyester produced = 0.99999/1 *100 = 99.999
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The element iodine appears in
Period 5 of the Periodic Table. This
means that an iodine atom has-
A five electrons in its outer orbital
B five orbitals in its electron cloud
C an atomic mass greater than four
D five protons and five neutrons in its nucleus
Answers
The element iodine appears in Period 5 of the Periodic Table. This means that an iodine atom has five orbitals in its electron cloud. so the correct option is (b).
As a member of group 7, iodine possesses seven outer electrons. Since it is in the fifth period, its electrons will be in orbitals 5s and 5p. The chemical formula for iodine is 5s25px25py25pz1.
What does iodine's orbital notation mean?total amount of electrons that could occupy each orbital
Again using iodine as an example, we can observe on the periodic table that it has an atomic number of 53. ( In neutral state it contains 53 electrons). The configuration of the entire electron cloud is 1s22s22p63s23p64s23d104p65s24d105p5.
Facts about Iodine:Iodine is a trace element that can be found as a dietary supplement, as well as naturally in some foods and some forms of salt. Iodine is a necessary component of the thyroid hormones triiodothyronine (T3) and thyroxine (T4) (T3).
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What is the iupac name of the following compound . vinylcyclohexane b. ethynylcyclohexane c. allylcyclohexane d. acetylcyclohexane
Answers
IUPAC name of vinylcyclohexane is vinylcyclohexane, ethynylcyclohexane is 1-ethynylcyclohexane, allylcyclohexane is prop-2-enylcyclohexane and of acetylcyclohexane is 1-Cyclohexylethan-1-one.
IUPAC stands for International Union of Pure and Applied Chemistry. It is the universally-recognized authority on chemical nomenclature. It is based on naming the molecule's longest chain of carbons connected by single bonds, whether in a continuous chain or in a ring.
It creates a standardized way to name chemical compounds. The use of Common names can lead to confusion and misinformation.
IUPAC name of vinylcyclohexane is 1-ethenylcyclohexane.
IUPAC name of ethynylcyclohexane is 1-ethynylcyclohexane.
IUPAC name of allylcyclohexane is prop-2-enylcyclohexane.
IUPAC name of acetylcyclohexane is 1-Cyclohexylethan-1-one.
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What is the difference between the sum of the measures of the interior angles in an octagon and the sum of the measures of the interior angles in a hexagon?.
Answers
The difference between the sum of the measures of the interior angles in an octagon and the sum of the measures of the interior angles in a hexagon is 360°.
Interior angle refers to the angle inside a polygon that is formed by two of its adjacent sides. The sum of the measures of the interior angles of a polygon is given by the equation:
180°(n - 2)
where n is the number of sides
An octagon is a polygon that has 8 vertices and 8 sides. The sum of the measures of the interior angles of an octagon is:
180°(8 - 2) = 180°(6) = 1080°
On the other hand, a hexagon is a polygon that has 6 vertices and 6 sides. The sum of the measures of the interior angles of an octagon is:
180°(6 - 2) = 180°(4) = 720°
Subtracting the sum of the interior angles of the two polygons,
1080° - 720° = 360°
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The percent of heat radiation reflected by the different types of surfaces that earth has (i.e. snow, rock, forest, etc.) can be quantified or measured as?
Answers
The percent of heat radiation reflected by the different types of surfaces that Earth has (i.e snow, rock, forest, etc.) can be quantified or measured as Albedo.
Albedo is the percentage of sunlight that is reflected off of a surface. The higher the albedo, the more reflective the surface is. Different surfaces have different albedos. For example, fresh snow has a high albedo, while a forest has a low albedo.
The albedo of a surface can have a big impact on the climate. If a surface has a high albedo, it will reflect more heat and stay cooler. If a surface has a low albedo, it will absorb more heat and become warmer.
You can measure the albedo of a surface with a simple device called an albedometer. By measuring the amount of sunlight that is reflected off of a surface, you can calculate the albedo.
Surfaces with a high albedo are important in helping to regulate the Earth’s climate. They help keep the Earth cool by reflecting back sunlight.
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what is meaning of product and reactant
Answers
Answer:
Reactants are starting materials and are written on the left-hand side of the equation. Products are the end result of the reaction and are written on the right-hand side of the equation.
A buffer consists of c5h5nc5h5n (pyridine) and c5h6n c5h6n . write the equation for the reaction that occurs when strong acid (h3o )(h3o ) is added to the buffer.
Answers
The balanced chemical equation for the reaction that occurs when strong acid H₃O⁺ is added to the buffer:
C₅H₅N + H₃O⁺ → C₅H₅NH⁺ + H₂O
A buffer can be defined as a substance that prevents the pH of a solution from changing by either releasing or absorbing H⁺ in a solution.
Buffer is a solution that can resist pH change upon the addition of an acidic or basic components and it is able to neutralize small amounts of added acid or base, pH of the solution is relatively stable.
This buffer is example of weak acid (C₅H₅NH⁺) and its conjugate base (C₅H₅N).
C₅H₅NH⁺ gain protons from strong acid H₃O⁺.
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How can blast help you identify the active site of your poi? make sure to include 2 advantages and 2 disadvantages of the program
Answers
Biochemical sequences that are similar to one another are found via BLAST. The application calculates the statistical significance by comparing nucleotide or protein sequences to sequence databases.
The Basic Local Alignment Search Tool (BLAST) identifies areas where sequences are locally similar. The software computes the statistical importance of matches between nucleotide or protein sequences and sequence databases.Advantages
1) Creating phylogeny
Using the BLAST web page, you can build a phylogenetic tree using the findings from the program. Only "first pass" phylogenetic analyses should use phylogenies based solely on BLAST as they are less reliable than other purpose-built computational phylogenetic methods.2) DNA analysis
BLAST can compare the chromosomal site of an interest sequence to pertinent sequences in the database while working with a known species and trying to sequence a gene at an unknown location (s). For this purpose, NCBI has a "Magic-BLAST" program based on BLAST.Disadvantages
1) You require repeatable, unbiased outcomes.
Because NCBI BLAST is a heuristic algorithm and uses a complex statistical model to determine whether a match is significant or not, it does not disclose all alignments it discovers. This choice is made based on the length of the alignment and the size of the database; if the database expands, it's possible that earlier findings will no longer be valid.2) Finding small sequences can be challenging
NCBI BLAST makes it more difficult by using algorithm shortcuts. The most crucial aspect of this heuristic is its word size parameter, which demands a continuous interval of three similar amino acids or eleven identical nucleotides before even attempting to align two sequences. Because of this, it is not the best option for finding brief sequences.In addition to assisting in the identification of gene family members, BLAST can be used to infer functional and evolutionary links between sequences.
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A mixture of reactants and products for the reaction shown below is at equillibrium in a 5.0L container. what would most likely happen to the the equilibrium if the volume in the container were reduced to 3.0L
N₂(g) + 3H₂(g) → 2NH₃(g)
A. more N2 and H2 would be produced until a new equilibrium position was reached
B. more N2,H2,NH3 would be produced until a new equilibrium position was reached
C. more NH3 would be produced until a new equilibrium position was reached
D. the concentrations of N2, H2, and NH3 would decrease until equilibrium has been reached again
Answers
If the volume is reduced, it then follows that; more N2,H2,NH3 would be produced until a new equilibrium position was reached.
What is the equilibrium situation?We know that a dynamic equilibrium occurs when the rate of forward reaction is equal to the rate of reverse reaction. In that case, the reactants disappear at the same rate as the products appear.
Now, we have the reaction; N₂(g) + 3H₂(g) → 2NH₃(g) In which case, the volumes to the left hand side of the reaction equation is smaller than the volume to the right hand side of the reaction equation.
If the volume is reduced, it then follows that; more N2,H2,NH3 would be produced until a new equilibrium position was reached.
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Calculate the ph of a mixture of 0.25 m acetic acid (ch3cooh) and 0.1 m sodium acetate (ch3coo- na ) in a total volume of 1 l. the pka of acetic acid is 4.76.
Answers
The pH of a mixture of 0.25 m acetic acid (CH3COOH) and 0.1 m sodium acetate (CH3COO- Na ) in a total volume of 1 l is 4.37.
The above situation represents a case of buffer solution.
Buffer solutions are those solutions that can resist change in their pH if any acid or base is added to them.
To calculate the pH of a buffer solution, the Henderson-Hasselbalch equation is used
pH = pKa + log [Salt]/[Acid]
Putting
pKa = 4.76
[Salt] = Concentration of sodium acetate = 0.1 M
[Acid] = Concentration of acetic acid = 0.25 M
pH = 4.76 + log [0.1]/[0.25]
pH = 4.76 + log[0.4]
pH = 4.76 - 0.39
pH = 4.37
Hence, the pH of a mixture of 0.25 m acetic acid (ch3cooh) and 0.1 m sodium acetate (ch3coo- na ) in a total volume of 1 l is 4.37.
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why is it important to begin a experiment with a clean and dry crucible
