Jarel

I need help with using arrays to multiply

What is the pH of a solution in which the hydroxide ion concentration is equal to 9.1 x 10^-2 moles/liters. A Acid B Basic C Neutral D Neither

A reaction that has been calculated to produce 60.0 grams of Copper (II) Chloride actually produces 50.0 grams of Copper (II) Chloride. What is the percent yield? A 0.833% B 96.1% C 83.8% D 120%

In the reaction between zinc and sulfuric acid, how many grams of sulfuric acid are required to produce 1.0 grams Hydrogen. A 1.0 B 2.0 C 49 D 98