Consider #N_2H_4+ 2H_2O_2 -> N_2+4H_2O#, what are the mole ratios of hydrazine (#N_2H_4#) to hydrogen peroxide (#H_2O_2#) and hydrazine to water?
Refer to the explanation.
The coefficients of the reactants and products can be translated as moles. The mole ratios come from the coefficients in the equation.
Mole Ratios of Hydrazine to Hydrogen Peroxide
Mole Ratios of Hydrazine to Water