MH2O = 2*1 g H + 1*16 g O = 18 g/mol
1 mol H2O ... 18 g H2O
x mol H2O ... 10 g H2O
x=0.55 moli H2O
MNH3 = 1*14 g N + 3*1 g H = 17 g/mol
1 mol NH3 ... 17 g
y mol NH3 ... 20 g
y=1.17 moli NH3
MHCl = 1*1 g H2 + 1*35.5 g Cl = 36.5 g/mol
1 mol HCl .. 36.5 g
z mol HCl .. 10 g
z=0.27 moli HCl