Объяснение:
Mr(Cl2) = 35,5*2 = 71
Mr(CO) = 12+16 = 28
Mr(H3PO4) = 1*3 + 31 + 16*4 = 98
Mr(SO3) = 32 + 16*3 = 80
Mr(CH4) = 12 + 1*4 = 16
Объяснение:
Mr(Cl2) = 35,5*2 = 71
Mr(CO) = 12+16 = 28
Mr(H3PO4) = 1*3 + 31 + 16*4 = 98
Mr(SO3) = 32 + 16*3 = 80
Mr(CH4) = 12 + 1*4 = 16