CH₄ + 2H₂O --> CO₂ + 4H₂

What is the limiting reactant when 20 g CH₄ react with 15 g H₂O?

Nitric acid can be neutralized by any base to form a salt and water, as in the following equation:

Mg(OH)₂ + 2 HNO₃ → Mg(NO₃)₂ + 2 H_­2O

How much magnesium nitrate salt will be formed by the reaction of 250. g magnesium hydroxide with 250. g nitric acid?

Tetraphosphorus decoxide combines with water to form phosphoric acid in the following unbalanced chemical equation:

P₄O₁₀ + H₂O → H₃PO₄

In order to form 100.0 g phosphoric acid, how much tetraphosphorus decoxide will you need?

2Fe₂O₃ + C → Fe + 3CO₂

You react 28.0 grams of carbon with excess Fe₂O₃. You find the actual yield to be 181.2 grams of CO₂. What is the percent yield of CO₂?

P₄ + 6Cl₂ --> 4PCl₃ 
The reaction of 75.0 g P₄ with excess chlorine gas produces 110 g PCl₃ in the lab. Calculate the percent yield for the reaction. 

How many grams of nitric acid, HNO₃, can be prepared from the reaction of 138 g of NO₂ with 54.0 g H₂O according to the equation below?

3NO₂ + H₂O → 2HNO₃ + NO

3CaCO₃ + 2FePO₄ --> Ca₃(PO₄)₂ + Fe₂(CO₃)₃

Assuming we start with 40.5 g of CaCO₃ and 45.0 g of FePO₄, identify the limiting reactant.

B₂H₆ + 3O₂ -->2 HBO₂ + 2 H₂O
 What mass of O₂ will be needed to react with 36.1 g of B₂H₆?