Предмет: Химия, автор: slavapetrov051

вычеслите относительную атомную или молекулярную массу веществ
K
Li2O2
SnSO4
Ba(OH)2

Ответы

Автор ответа: 2252563

0

Ответ:

Mr(K)=39

Mr(Li2O2)=7*2+16*2=46

Mr(SnSO4)=119+32+16*4=215

Mr(Ba(OH)2=137+16*2+2*1=171

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