Chemistry The 35S atom on a radiolabeled amino acid, methionine, has a half-life of 87.4 days. What is the mass of radioactive methionine purchased, considering the manufacturer's claim that the specific activity is 43.5 TBq)/millimole? (The molar mass of the S-35 labeled amino acid, methionine, is 149.21 g/mol.) (Follow-up: what's the price per gram?!?)

Q: Determine the concentration of the stock solution in molarity from which 50.0 mL was taken in order ...

A: M1=(?) V1= 50ml M2= 0.452M V2= 250ml  

Q: large containers of sulfuric acid solution, 9. А chemist has two with different concentrations of ac...

A: Soln

Q: You're trying to calculate the solubility of a saturated solution of Ba(ClO)2. You start out by writ...

A: Solubility product is the indicator of solubility of a partially soluble substance in a solution.

Q: What changes would be made to separate the two isomeric pinene (α and β), bp 156 oC and 167 oC  resp...

A: As the boiling points of the isomers is different enough that we can separate them by fractional dis...

Q: || CH3

A: Given, 

Q: In a good calorimeter with a lid, 50.0 gram sample of liquid water at 25.0 °C is mixed with 32.87 gr...

A: a. It gained by cold water b. Heat lost by hot water c. According to law of thermodynamics the total...

Q: 2Na,S2O3+ I2 → Na»s,Os+ 2NaI 2FeCls + H2S + 2FeCl2 + S+ 2HCI 3Mg + N2 + M93N2

A:

Q: Gas chromatography can be used to evaluate thermodynamic parameters of volatile compounds such as th...

A: The temperature dependence of Henry's law constant is given as: ln KH=Constant-Heat of adsorptionRT ...

Q: The PHIVOLCS recently reported that Taal volcano emitted 15,500 tons of Sulfur Dioxide (SO2). How ma...

A:

Q: Draw structural formulas for the following the compounds: (d) cis-1,3-dicyclohexylcyclopentane (e)...

A:

Q: Match column A with Column B. Given: Samples were spotted on the TLC plate and after performing the ...

A: This question is related to Thin Layer Chromatography. Thin-layer chromatography (TLC) is a  techniq...

Q: For the first-order reaction, A products, if half of the initial concentration of A reacts in 20 min...

A:

Q: A solution of formic acid , HCHO2 is 23.6 M and has a density of of 1.20 g /mL. What is the concentr...

A:

Q: What is the λmax of this given structure?

A: Lamba max=308 nm

Q: Which is NOT true about Auxochromes O They are conjugated dienes O they are functional group attache...

A: A chromophore is a molecule's constituent responsible for a specific UV/visible absorption.  The sub...

Q: Give IUPAC names for the compounds shown below

A: Find the highest priority functional group. Determine and name the longest continuous carbon chain t...

Q: What is the ionic strength of a solution that contains 0.20 M sodium chloride and 0.50M sodium sulfi...

A:

Q: The rate of a reaction was experimentally determined to double if the concentration of reactant A is...

A:

Q: H3C-C-0-Ĉ-CH3 A FeBr3 + Br2 B (Para Product only) AICI3

A: We have given the organic reaction and we have to find the major product of the reaction.   

Q: Consider a theoretical reaction: 3A(g) + B(g) = 2Cg) where K = 100, %3D what is the equilibrium cons...

A:

Q: OH HO. NO2

A:

Q: OCH2CH3 CHO FeBr3 + Br2

A:

Q: 3. Balance the following reaction equation in basic solution: 2- Mn04 (aq) + Cr(OH)3(s) - Mn02(s) + ...

A: MnO4- (aq) + Cr(OH)3(s) -----> MnO2(s) + CrO42-(aq)

Q: 1. An aqueous solution with 15 g sulfuric acid is dissolved to make 0.2F solution. The specific grav...

A:

Q: Does the addition of solvent change the mass of the solute when a solution is diluted? Explain

A: Solution is made by mixing of solute and solvent. Solute is the substance present in less quantity w...

Q: For the following reaction, which of the changes listed below would cause more reactants to form whe...

A: Please find your solution below : Le Chatelier's principle states that when a reaction at equilibriu...

Q: What is the final concentration of 0.997 M HCl when 5.0 mL of this stock solution is diluted to a fi...

A: given,  concentration of HCl = 0.997 M volume of stock solution taken for dilution = 5.0 mL = 0.005 ...

Q: A tank contains 325 moles of compressed helium qas. How many Helium atoms are in the tank?

A:

Q: A functional group capable of having characteristic electronic transitions. These chemical groups sc...

A: Every functional group having characteristic electronic transitions called signal. Azo group absorbs...

Q: Match column A with column B. v Mobile phase: NON-POLAR Stationary phase: NON-POLAR v mobile phase -...

A:

Q: Consider a theoretical reaction: 3A (g) + B(g) = 2C(g) where K = 100, what is the equilibrium consta...

A:

Q: Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first...

A:

Q: Some measurements of the initial rate of a certain reaction are given in the table below. N2 H2 init...

A: A question based on kinetics of reactions in solution that is to be accomplished.

Q: what is the difference within a molecule between an intramolecular and intermolecular force of attra...

A: To explain: the difference within a molecule between an intramolecular and intermolecular force of a...

Q: The isomerization of cyclopropane to form propene is a first-order reaction. H2C CH2 H3C-CH=CH2 CH2 ...

A: For a first order reaction, the rate equation is :   K t = 2.303 log (N 0 /N) Where - K = rate cons...

Q: Consider a theoretical reaction: 3A(e) + Bie) =2C2) where K = 100, %3D what is the equilibrium const...

A:

Q: Calculate ΔS for the system when 2 mol of gas with Cp of 7/2R is changed from 25 C and 1 atm to 125 ...

A:

Q: CH3 HNO3 KMNO4 A В H2SO4 H*, Heat Br

A: When benzene ring possesses two different groups among which one is activating and the other is deac...

Q: The reaction of N205 with gaseous H20 is a potentially important reaction in the chemistry of acid r...

A: Given:  

Q: А. Br- Pd(OAc)2 HO. P(0-tolyl)3 (CH3CH2)3N Br Pd(OAc)2 P(0-tolyl)3 (CH3CH2)3N Br. OH HN. mou HO, HN ...

A:

Q: calculate the degree of unsaturation and draw structures that would meet the following descriptions

A: We have to find the structure of C10H10O2 which contain an aromatic ring one hydroxyl group and a ke...

Q: A sample of N2 gas (2.0 mmol) effused through a pinhole in 5.5 s. It will take s for the same amount...

A:

Q: Calculate the molality of Ca(OH)2 in a 1.50 M aqueous solution that has a density of 1.320 g/mL.

A:

Q: Why do we need to know the concept of chiral molecules?

A: The study of chirality in nature has played a very significant role in understanding biochemistry. C...

Q: Which of the following molecules can participate in any kind of hydrogen bonding with water? H. H-C=...

A: The compounds given are,

Q: Interactions with water? Na N=N= IN=N-N

A:

Q: Match column A with Column B. Everything is all about column Chromatography v Least polar molecules ...

A: This question is related to column chromatography. Column chromatography is a technique used to isol...

Q: Sample exercises  (21) use Dalton's Law

A: Excercise 21 :-  Using Ideal gas equation.,  PV = nRT And, P = nRT/V 1 dm3  = 1 L 10 dm3  = 10 Litre...

Q: 1. Balance the following reaction equation in acidic solution: Mn0, + Crag) Mnag) 2 + Cr20, Caq) (aq...

A: Given unbalanced reaction is : MnO4- (aq) + Cr3+ (aq) ---------> Mn2+ (aq) + Cr2O72- (aq)  Balanc...

Q: The osmotic pressure of a 14.538 mM solution of LiCl is 343.095 mm Hg at 27.84 °C. How many ions per...

A: Given:  Osmotic pressure = 343.095 mm Hg  Concentration (C) = 14.538 mM  Temperature = 27.84°C   

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.