Question

буду очень счастлива так как не шарю в химии

Answer 1

1) Mr(SO₃) = 32 + 16*3 = 80

ω(S) = $\frac{32*1}{80} * 100%$ % = 0,4%

ω(O₃) = $\frac{16*3}{80} *100%$% = 0,6%

2) Mr(NO₂) = 14 + 16*2 = 46

ω(N) = $\frac{14*1}{46} *100$% = 0,30%

ω(O₂) = $\frac{16*2}{46} *100$% = 0,69%

3) Mr(Al₂S₃) = 27*2 + 32*3 =150

ω(Al₂) = $\frac{27*2}{150} *100$% = 0,36%

ω(S₃) = $\frac{32*3}{150} *100$% = 0,64%

4) Mr(Cl₂) = 35*2 =70

ω(Сl₂) = $\frac{35*2}{70} *100$% = 1

5) Mr(K₂CO₃) = 39*2 + 12 + 16*3 = 138

ω(K₂) = $\frac{39*2}{138} *100$% = 0,56%

ω(C) =$\frac{12*1}{138} *100$% = 0,08%

ω(O₃) = $\frac{16*3}{138} *100$% = 0,34%

6) Mr(Al(OH)₃) = 27 + 16*3 + 1*3 =78

ω(Al) = $\frac{27*1}{78} *100$% = 0,34%

ω(O) = $\frac{16*3}{78} *100$% = 0,61%

ω(H) = $\frac{1*3}{78} *100$% = 0,03%