1.
Mr(CaCl2)=40+35*2=110
Mr(Mg3(PO4)2)=24*3+31*2+16*(4*2)=72+62+128=262
2.
Mr(P2O5)=31*2+16*5=62+80=142
w(P)=62/142*100%=0,44*100%=44%
w(O)=80/142*100%=0,56*100%=56%
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
1.
Mr(CaCl2)=40+35*2=110
Mr(Mg3(PO4)2)=24*3+31*2+16*(4*2)=72+62+128=262
2.
Mr(P2O5)=31*2+16*5=62+80=142
w(P)=62/142*100%=0,44*100%=44%
w(O)=80/142*100%=0,56*100%=56%