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Problem- After 57.0 min, 26.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics?
I am not able to solve the above problem somebody help me to get the correct answer
The distance between layers in a crystal is 265 pm. X rays are diffracted from these layers at an angle of 20.1°. Assuming that n = 4, calculate the wavelength of the X rays in nm.
Problem- Under standard conditions, the Gibbs free energy of the reactants G, std(reactants) in a redox reaction in aqueous solution is 360.02 kJ and the Gibbs free energy of the products G, std(products) is 124.52 kJ. The number of moles, n, of e..
If ammonia was added to a saturated solution of copper(II) iodate in a equilibrium with its precipitate, would the copper ion concentration increase, decrease, or stay the same. Why
which of the following processes are exothermic?
A standard oxalic acid solution is 0.065 M. It was prepared by dissolving H2C2O4*2H2O in distilled water.
Let's say that you are given a 0.215g of unknown weak acid and asked to dilute with 75 mL of DI water. You then use a standardized 0.125 M NaOH to titrate the unknown acid solution
hard, amorphous polymers become soft and flexible at the glass transition temperature B) crystalline regions of a polymer melt transition temperature C
Assume the first equivalence pont is around 13.30 ml,for an experiment. while carrying out the ph meter titration approximately at which volume will you
A solution was prepared by mixing 70ml of 4.00 mol/L HCl and 30.0 mL of 8.00 mol/L HNO3. Water was then added until the final volume was 500ml. What is the [H+] and what is the pH ?
Complete combustion of a 3.54-g sample of procaine with excess O2 formed 8.58 g CO2 and 2.70 g H2O . Another sample of mass 2.35 g was found to contain 0.279 g of N . The molar mass of procaine was found to be 236.
Consider the following thermochemical equations : 8Mg(s) + Mg(NO3)2(s) ? Mg3N2(s) + 6MgO(s) ?H°rxn = -3884 kJ Mg3N2(s) ? 3Mg(s) + N2(g) ?H°rxn = +463 kJ 2MgO(s) ? 2Mg(s) + O2(g) ?H°rxn = +1203 kJ Use the above equations to calculate the ?H°f (in k..
determine the total volume occupied by a solution made by mixingone liter of alcohol with one liter of water. assume
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