а) М(C3H8)=12*3+8=44
б)М(H3PO4)=3+31+16*4=98
в)М(Cu(NO3)2)=64+(14+3*16)*2=188
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а) М(C3H8)=12*3+8=44
б)М(H3PO4)=3+31+16*4=98
в)М(Cu(NO3)2)=64+(14+3*16)*2=188