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Cu2+(aq) + Zn(s) ---> Cu(s) + Zn2+(aq) A galvanic cell that uses the reaction shown above has a standard state electromotive force of 1.1 volts. Which of the following changes to the cell will increase the voltage? I. An increase in the mass of Zn(s) in the cell II. An increase in the concentrtion of Cu2+(aq) in the cell. III. An increase in the concentration of Zn2+(aq) in the cell. a. I and III only b. II only c. I and II only d. I only e. III only
containing granite basins tend to become acidified by acid rain more readily than lakes lying in calcium carbonate, CaCO3, limestone basins. Explain why?
What is the value of Î"Go in kJ at 25 oC for the reaction between the pair: I2(s) and Br-(aq) Use the reduction potentials for I2(s)
A 0.150 M Na2SO4 Has [Ag^+] = 9.7x10^-3 M. What is the value of Ksp for Ag2SO4 obtained with these data
In the photosythesis process sugars are produced during the reaction of carbon with water Assuming air is composed of 0.030% carbon dioxide calculate the volume of air required at reference conditions to produce 1.0kg of sugar.
Phosphoric acid, H3PO4, is a triprotic acid, for which Ka1=7.2 x 10-3, Ka2 = 6.3 x 10-8 and Ka3 = 4.2x 10-13. What is the value of Kb for hydrogen phosphate anion, HPO4 2-?
In 2C4H10+13O2->8CO2+10H20 how many moles of O2 are required to react completely with 4.4 Moles of C4H20?
In a particular experiment, 2.25 g of NH3 and 3.75 g of O2 are placed in a container and allowed to react. How many grams of NO will have been formed when all of the limiting reactant has been consumed.
How much alcohol must be burned to generate enough heat to warm 279kJ from 60 degrees fahrenheit to 180 degrees fahrenheit? Express answer in grams. Show entire process
calculate the molarity of phosphoric acid in a solution that is 84% by mass phosphoric acid and has a dentisty of 1.87 g/m.
A student determined the molar mass of an unknown non-electrolyte compound by measuring the freezing point depression of an aqueous solution of the compound.
Therefore the formula is N2O4 Dinitrogen tetraoxide. Recognizing Incorrect Names and Formulas of Explain what is wrong with the name of formula in the second.
A concentrated sulfuric acid solution is 65.0% H2SO4 by mass and has a density of 1.55 g/mL at 20°C. What is the mass of 8.00 L of the concentrated sulfuric acid solution?
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