0.2 grams of hydrogen are needed to produce 1.80 g of water according to this equation 2H2 + O2 ------> 2H2O.
How many grams of hydrogen are needed to produce 1.80 g of water according to this equation? 2H2 + O2 = 2H2O and how do you come about getting the answer?
1.80/18=0.1 mol, n(H2)=n(H2O)=0.1 mol, 0.1*2=0.2 gram, so 0.2 gram of hydrogen are need.