Решите пожалуйста !
Mr(P2 O5)=
Mr(H2 SO4)=
Mr((Ca3)(PO4)2)=
1.31*2+16*5=142
2.2+32+16*4=98
3.40*3+31*2+16*8=310
Mr(P2 O5)=31*2+16*5=137
Mr(H2 SO4)=2*1+32+4*16=98
Mr((Ca3(PO4)2)=3*40+2*31+8*16=310
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Answers & Comments
1.31*2+16*5=142
2.2+32+16*4=98
3.40*3+31*2+16*8=310
Mr(P2 O5)=31*2+16*5=137
Mr(H2 SO4)=2*1+32+4*16=98
Mr((Ca3(PO4)2)=3*40+2*31+8*16=310