How many moles of nitrogen are formed when 38.6 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 molarity of a solution formed by dissolving 89.7 g LiBr in enough water to yield 750.0 mL of solution.

Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of MgSO3 and HI are mixed.

How many moles of oxygen are formed when 46.6 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.

What volume of 0.305 M AgNO3 is required to react exactly with 155.0 mL of 0.274 M Na2SO4 solution?  Hint:  You will want to write a balanced reaction.  AgNO3 = 169.874 g/mol; Na2SO4 =  142.036 g/mol

How many grams of Li3N can be formed from 0.95 moles of Li?  Assume an excess of nitrogen.             6 Li(s) + N2(g)  →  2 Li3N(s)

Determine the percent yield of a reaction that produces 28.65 g of Fe when 50.00 g of Fe2O3 reacts with excess Al according to the following reaction.             Fe2O3(s) + 2 Al(s)  →  Al2O3(s) + 2 Fe(s)

How many moles of nitrogen are formed when 54.6 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)

A sample of potassium iodide is decomposed into its constituent elements.  If the sample produced 26.4 kg of potassium, how many kg of iodine were produced?