Question

Визначте молекулярну массу речовини CaCo3,Cu2O,Na2o, Na2SO3,li2O,CaH2,ALPO4,Na2O,MgH2 дам 40 балів !!!

Answer 1

Mr CaCO3 = 40+12+16×3= 100

Mr Cu2O = 64×2+16 =144

Mr Na2O = 23×2+16= 62

Mr Na2SO3 = 23×2+32+16×3= 126

Mr Li2O = 7 ×2+16 =30

Mr CaH2 = 40+1×2=42

Mr AlPO4=27 +31+16×4=122

Mr Na2O =23×2+16 = 62

Mr MgH2 = 24+1×2= 26