Ответ:
Объяснение:
Mr(H2S) = 1*2 + 32 = 34
Mr(SO3) = 32+16*3 =80
Mr(Na2CO3) = 23*2 + 12 + 16*3 =106
Mr(Cu(OH)2 = 64 + 16*2 + 1*2 =98
Mr(P2O5) = 31*2 + 16*5 =142
Mr(AlCl3) = 27 + 35,5*3 =133,5
Mr(Ba(NO3)2 = 137+14*2 +16*6 =261
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Ответ:
Объяснение:
Mr(H2S) = 1*2 + 32 = 34
Mr(SO3) = 32+16*3 =80
Mr(Na2CO3) = 23*2 + 12 + 16*3 =106
Mr(Cu(OH)2 = 64 + 16*2 + 1*2 =98
Mr(P2O5) = 31*2 + 16*5 =142
Mr(AlCl3) = 27 + 35,5*3 =133,5
Mr(Ba(NO3)2 = 137+14*2 +16*6 =261