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Problem- Purification of copper can be acheived by electrorefining copper from an impure copper anode onto a pure copper cathode in an electrolytic cell. How many hours will it take to plate 12.0 kg of copper onto the cathode if the current passed through the cell is held constant at 35.0 A? Assume the copper in the electrolytic solution is present as Cu2.
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in nature the element x consists of two naturally occurring isotopes. 107x with abundance 54.34 and isotopic mass
Consider the reaction CaCN2 + 3 H2 O → CaCO3 + 2 NH3 . How much CaCO3 is produced if 47.5 moles NH3 are produced?
An organic compound of molecular formula C10 H12 O2 reacts with both aqueous NaOH and aqueous NaHCO3. The compound reacts with Br2/FeBr3 to yield 2 products which can easily be separated from each other and each has molecular formula C10 H11 O2 Br..
conversion of 20 ATP molecules to cAMP per second. (Assume that each G protein activates a single unique adenylyl cyclase.) Calculate the number of moles of cAMP that are produced per second. Enter your answer to at least two significant figures.
A flask contains 0.110 mol of liquid bromine, rm Br_2. Determine the number of bromine molecules present in the flask.
Which of the subsequent statements correctly explain thehydronium-hydroxide balance in a given solution
Hydrogen gas is bubbled into a solution of barium hydroxide that has sulfur in it. The unbalanced chemical equation for the reaction that takes place is:
Calcium fluoride has a Ksp of 3.9 x 10^-11 at 25 C. What is the fluoride ion concentration at equilibrium
Determine how will this error control the final computed percentage of CH3COOH in the vinegar
calculate the total volume of gas at 128 and 745 produced by the complete decomposition of 1.67 of ammonium
Problem- Consider a reaction with two competing pathways. One is labeled as the kinetic pathway while the other is labeled as the thermodynamic pathway. How could you use temperature to favor the kinetic pathway over the thermodynamic pathway. Why
What is the [H30+] and the pH of a benzioc acid-benzoate buffer that consists of 0.17 M C6H5COOH and 0.26 M C6H5COONa? (Ka of benzoic acid = 6.3*10^-5)
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