Ca+2HCl=CaCl2+H2
n(H2)=0.224/22.4=0.01моль
m(Ca)=40*0.01=0.4г
w(Ca)=0.4/2*100=20%
m(Ca)=10*20/100=2г
Ca+2HCl=CaCl2+H2
n(H2)=0.224/22.4=0.01моль
m(Ca)=40*0.01=0.4г
w(Ca)=0.4/2*100=20%
m(Ca)=10*20/100=2г