Hydrazine NHa base like ammonia can react with sulfuric acid

Hydrazine, N,Ha base like ammonia, can react with sulfuric acid. What mass of hydrazine reacts with 450 mL of O.18O MHSO, Mass =

Number of moles of H2SO4 = Volume of H2SO4(in L) * molarity (M)

=> 450/1000 * 0.180

=> 0.081 moles

2 moles of N2H4 reacts with 1 mole of H2SO4

Number of moles of N2H4 required = 2 * 0.081 = 0.162 moles

Molar mass of N2H4 = 2 * 14 + 4 * 1 = 32 gm/mol

Mass of hydrazine required = number of moles * molar mass

=> 0.162 mol * 32 gm/mol

=> 5.184 grams