как рассчитать малекулярную массу веществ
H3PO4
CuCl2
Ca(OH)2
Al2(SO4)3
CH3COOH
M (H3PO4) = 3 + 31 + 64 = 98 M (CuCL2) = 63 + (35 X 2) = 133 M (H3PO4) = 3 + 31 + 64 = 98 M (Ca(OH)2) = 40+ (16+3) X 2 = 118 M (Al2(SO4)3) = (27 X 2) + (32+64) x 3 = 450 M (CH3COOH) = 12+3+12+32+1=60