Question

Подсчитать процентный состав
Ca(OH)2 и C2H2Br2

Answer 1

Ca(OH)2
w(Ca)=M(Ca)/M(Ca(OH)2)=40/74=0,54- 54%
w(O)=M(O)*2/M(Ca(OH)2)=32/74=0,43- 43%
w(H)=M(H)*2/M(Ca(OH)2)=2/74=0,03-3%

C2H2Br2
w(C)=M(C)*2/M(C2H2Br2)=24/186=0,13- 13%
w(H)=M(H)*2/M(C2H2Br2)=2/186=0,01-1%
w(Br)=M(Br)*2/M(C2H2Br2)=160/186=0, 86 -86%