Determine the oxidizing agent in the following reaction.             Ni(s) + 2 AgClO4(aq)  →  Ni(ClO4)2(aq) + 2 Ag(s)

According to the following reaction, how many grams of sulfur are formed when 37.4 g of water are formed?               2 H2S(g) + SO2(g)  →  3 S(s) + 2 H2O(l)

How many moles of oxygen are formed when 28.6 g of KNO3 decomposes according to the following reaction?  The molar mass of KNO3 is 101.11 g/mol. 4 KNO3(s)  →  2 K2O(s) + 2 N2(g) + 5 O2(g)

Determine the reducing agent in the following reaction.             2 K(s) + Cu(C2H3O2)2(aq)  →  2 KC2H3O2(aq) + Cu(s)

Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of K2CO3 and HBr are mixed.

A sample of calcium fluoride was decomposed into its constituent elements.  If the sample produced 294 mg of calcium, how many g of fluorine was formed?

How many moles of nitrogen are formed when 48.6 g of KNO3 decomposes according to the following reaction?  The molar mass of KNO3 is 101.11 g/mol.             4 KNO3(s)  →  2 K2O(s) + 2 N2(g) + 5 O2(g)

Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of K2CO3 and HBr are mixed.

Determine the molarity of a solution formed by dissolving 89.7 g LiBr in enough water to yield 750.0 mL of solution.

A sample of potassium iodide is decomposed into its constituent elements.  If the sample produced 20.4 kg of potassium, how many kg of iodine were produced?