1.70 L of 0.550 M H2O2 reacts according to the following reaction.

Question

2H2O2(aq) -> 2H2O(l) + O2(g)
How much H2O is formed? (molar mass of H = 1.00 g/mol O = 16.0 g/mol)

Answer 1

mols H2O2 = M x L = ?
Convert mols H2O2 to mols H2O with the coefficients in the balanced equation.
Convert mols H2O to g. g = mols x molar mass.