Ответ:
MgH2, AlH3
CH4, PH3, H2S
M(MgH2) = 24 + 2 = 26
M(AlH3) = 27 + 3 = 30
M(CH4) = 12 + 4 = 16
M(PH3) = 31 + 3 = 32
M(H2S) = 32 + 2 = 34
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Ответ:
MgH2, AlH3
CH4, PH3, H2S
M(MgH2) = 24 + 2 = 26
M(AlH3) = 27 + 3 = 30
M(CH4) = 12 + 4 = 16
M(PH3) = 31 + 3 = 32
M(H2S) = 32 + 2 = 34