Calculate the mass ,volume and number of molecules of hydrogen liberated when 198grams of zinc reacts with hydrochloric acid?
Zn + 2HCl ==> H2 + ZnCl2
mols Zn = grams/atomic mass = ?
Use the coefficients in the balanced equation to convert mols Zn to mols H2.
volume H2 = mols H2 x 22.4 L/mol = ?
mass H2 = mols H2 x molar mass H2 = ?
# molecules H2 = mols H2 x 6.02E23 = ?