When ammonia gas, oxygen gas and methan gas (CH4) are combined, the products are.... HELP ON THIS PROBLEM PLZ?

Question

...hydrogen cyanide gas and water

a)write a balanced chemical equation for this reaction.

b)Calculate the mass of each product produced when 225 g of oxygen gas is reacted with an excess of the other two reactants.

c)If the actual yield of the experiment in "b)" is 105 g of HCN, calculate the percent yield.

Answer 1

a) 2NH3 + 302 + 2CH4 → 2HCN + 6H2O



b) 96 g O2 → 54 g HCN + 108 g H2O

225 g O2 → 126.5625 g HCN + 253.125 g H2O

c) 105(100)/126.5625 ≈ 82.963% ≈ 83.0%