Ca+ 2HNO3=Ca (NO3)2+ H2 n (Ca)=m/M= 16/40= 0.4 MOMB n (Ca(NO3)2)= 0.4 MOnb M (Ca(NO3)2)= 164 r/Monb m (Ca(NO3)2)= n*M= 0.4*164= 65.6 r
OTBET: 65.6r
Ca+ 2HNO3=Ca (NO3)2+ H2 n (Ca)=m/M= 16/40= 0.4 MOMB n (Ca(NO3)2)= 0.4 MOnb M (Ca(NO3)2)= 164 r/Monb m (Ca(NO3)2)= n*M= 0.4*164= 65.6 r
OTBET: 65.6r