Ca(OH)2 = 40+ 16×2 + 1×2 = 74
KMnO4 = 39 +55 +16×4 = 158
MgBr2 = 24 + 80×2 = 184
KClO3 = 39 + 35,5 + 16×3 = 122,5
Ca(OH)2 = 40+ 16×2 + 1×2 = 74
KMnO4 = 39 +55 +16×4 = 158
MgBr2 = 24 + 80×2 = 184
KClO3 = 39 + 35,5 + 16×3 = 122,5