Ответ:
Mr (NO2)=14+16*2=46
Mr (Ca3(PO4) 2 =40*3+2*31+16*2*4=120+62+128=310
Mr (NaNO3)=23+14+16*3=85
Mr (PH3) = 31+1*3=34
Объяснение:
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Ответ:
Mr (NO2)=14+16*2=46
Mr (Ca3(PO4) 2 =40*3+2*31+16*2*4=120+62+128=310
Mr (NaNO3)=23+14+16*3=85
Mr (PH3) = 31+1*3=34
Объяснение: