Ответ:
Mr(2CO) = 2 × 12 + 2 × 16 = 56
Mr(H2S) = 2 × 1 + 1 × 32 = 34
Mr(Ca(NO2)2) = 1 × 40 + 2 × 14 + 4 × 16 = 132
Mr(3H3PO4) = 9 × 1 + 3 × 31 + 12 × 16 = 294
Mr(2SO3) = 2 × 32 + 6 × 16 = 160
Mr(CH4) = 1 × 12 + 4 × 1 = 16
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Ответ:
Mr(2CO) = 2 × 12 + 2 × 16 = 56
Mr(H2S) = 2 × 1 + 1 × 32 = 34
Mr(Ca(NO2)2) = 1 × 40 + 2 × 14 + 4 × 16 = 132
Mr(3H3PO4) = 9 × 1 + 3 × 31 + 12 × 16 = 294
Mr(2SO3) = 2 × 32 + 6 × 16 = 160
Mr(CH4) = 1 × 12 + 4 × 1 = 16