1) Mr(N₂ )=14x2=28
2) Mr(Kl )=39+127=166
3) Mr(H₂S )=1x2+32=34
4) Mr(Fe₂O₃ )=56x2+16x3=112+48=160
5) Mr(HCIO₄ )=1+35,5+16x4= 1+35,5+64=100,5
6) Mr{Fe₂(SO₄)₃}=56x2+(32+16x4)x3=112+(32+64)x3=112+288=400
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1) Mr(N₂ )=14x2=28
2) Mr(Kl )=39+127=166
3) Mr(H₂S )=1x2+32=34
4) Mr(Fe₂O₃ )=56x2+16x3=112+48=160
5) Mr(HCIO₄ )=1+35,5+16x4= 1+35,5+64=100,5
6) Mr{Fe₂(SO₄)₃}=56x2+(32+16x4)x3=112+(32+64)x3=112+288=400