M=nM
m 1.5*(23*2+16)
1,5*62
m=93гр
C3H8O3 - глицерин
Mr (C3H8O3) = 12 * 3 + 1 * 8 + 16 * 3 = 92
W (H) = (1 * 8) / Mr (C3H8O3) = 8 / 92 = 0.08696 = 8.696%
Ответ: W (H) = 8.696%
A) Al и He
б) Мg и S
в)Na и Сl ( Na+Cl=NaCl хлорид натрия)
г)Li и O
NH4NO3:
M(N) = 14
M(2N) = 28
M(NH4NO3) = 80
W(N) = (28/80)*100 = 35%
HNO3:
M(HNO3) = 63
W(N) = (14/63)*100 = 22.22%
35% - 22.22% = 12.78%