Ответ:
Mr(Cr(NO3)2)=52+14×2+16×5=160
Mr(N)=28
w=Ar/Mr=28/160=0.175
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Ответ:
Mr(Cr(NO3)2)=52+14×2+16×5=160
Mr(N)=28
w=Ar/Mr=28/160=0.175