what mass of h2o is formed when h2 reacts with 384g of o2?

Answer 1

humm

2H2 + O2 ---> 2H2O

O is 16 g/mol
so O2 is 32 grams/mol
so we have 384/32 = 12 mols of O2

That will yield 2*12 = 24 mols of H2O
a mol of H2O is 2+16 = 18 grams/mol
so 24 mols = 24*18 = 432 grams water