1. The problem statement, all variables and given/known data if 20.0 g of dihydrogen is reacted with 20.0 g of dioxygen , how many grams of water is produced? 2. Relevant equations 3. The attempt at a solution balancing 2H2 + O2 = 2H20 now 2 mole h2 gives 2mole H2O so 20/2 moles of H2 will give 10 moles H2O 10 x 18 = 180 g ............ am i right?