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Metallic copper can be made by the electrolysis of molten CuO. (a) What mass of Cu is formed by passing a current of 7.09 A through molten CuO for 1.00 days? The unbalanced chemical reaction representing this electrolysis is shown below. CuO Cu + O2 g of Cu is formed by this electrolysis. (b) How many minutes are needed to plate out 20.00 g of Cu from molten CuO using 8.29 A current? minutes are needed.
If the solubility of a gas is 7.5 g/L at 404 kPa pressure, what is the solubility of the gas when the pressure is 202 kPa.
Explain why a buffer made of equal concentrations of CH3COOH and CH3COO- does not change in pH when a small amount of NaOH (a strong base) is added to the solution. Does the NaOH dissociate into ions when it is added to the solution?
If you have 375 molecules in a 10^-4 dilution, how many molecules were in the original solution
10 mg of magnesium metal and 30 ml of hydrochloric acid are added to 300 ml of water and hydrogen gas is eveloved. The reaction is as follows: Mg + 2HCl -> H2 + Mg2+ (aq) + 2Cl- (aq). Calculate the limiting reactant.
If 100. grams of liquid water at 100.0 C and 200. grams of water at 20.0 C are mixed in an insulated container, what will be the final temperature of the water? The specific heat of water is 4.18 J/g
Methane gas is compressed from 22. L to 2.5 L at a constant temperature. The final pressure is 18.1 atm. What was the original pressure?
If a particular alloy is prepared by mixing 11.2 moles of copper with 1.5 moles of nickel, what is the mass percentage of nickel in the alloy
The elements silver, molybdenum, and sulfur combine to form Ag2MoS4. What is the maximum mass of Ag2MoS4 that can be obtained if 8.63 g of silver
Calculate the solubility of Ca(OH)2 in a 0.469M CaCl2 solution at 31°C, given that the Ksp of Ca(OH)2 is 4.96 x 10-6 at that temperature. Give your answer in milli Molar units
At 2000°C the equilibrium constant for the reaction is Kc = 2.4 x 10^3. , 2 NO(g)-> N2(g) + O2(g) If the initial concentration of NO is 0.100 M, what are the equilibrium concentrations of NO, N2, and O2?
what does the equation (particularly the products) for 2-chloro-2-methylpropane and 2-bromo-2-methylpropane look like? The solvents are acetone, isopropyl, and ethanol.
if you titrated it with .233 M sodium hydroxide solution, and it took 8.33 ml of the base to neutralize the acid, what was the concentration of the nitric acid? Write the Neutralization reaction, balance it, NAME the products THEN solve the proble..
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