1. даноm(Ca)= 60 g--------------------------n(O2)-? 60 X2Ca+O2-->2CaO M(Ca)= 40 g/mol M(O2) = 32 g/mol2*40 32X = 60*32 / 80X = 24 gn(O2)= m/M = 24/32 = 0.75 molответ 0.75 моль2. даноV(H2)= 560 L------------------m(H2O)-? 560 L X2H2+O2-->2H2O Vm = 22.4 L/mol M(H2O)= 18 g/mol2*22.4 2*18X = 560*36 / 44.8 = 450 gответ 450 г