16- In the acetylene torch, acetylene gas 1C2H22 burns in oxygen to produce carbon dioxide and water. 2C₂Hz (g) + 502(g) -4CO2(g) + 2H₂O (g) a. How many moles of Oz are needed to react with 2.00 moles of C₂H₂? b. How many moles of CO, are produced when 3.5 moles of C,H, reacts? c. How many moles of C₂H₂ are needed to produce 0.50 mole of H₂O? d. How many moles of CO2 are produced from 0.100 mole of O₂? 17- Sodium reacts with oxygen to produce sodium oxide. 4Na (s) + O2(g) ―2Na₂O (s) a. How many grams of Na₂O are produced when 57.5 g of Na reacts? I b. If you have 18.0 g of Na, how many grams of O2 are needed for the reaction? c. How many grams of O2 are needed in a reaction that produces 75.0 g of Na₂O? 18- Nitrogen gas reacts with hydrogen gas to produce ammonia. Nz (g) + 3H2(g) - 2NH, (g) a. If you have 3.64 g of H₂, how many grams of NH, can be produced? b. How many grams of H, are needed to react with 2.80 g of N₂? c. How many grams of NH, can be produced from 12.0 g of H₂?