Дано
w(C) = 80% = 0.8
w(H) = 20% = 0.2
D(CH4) = 1.875
CxHy
Решение
D(CH4) = Mr(CxHy) / Mr(CH4) = Mr(CxHy) / (12 * 4 + 1) = Mr(CxHy) / 16 = 1.875
Mr(CxHy) / 16 = 1.875
Mr(CxHy) = 30
x = (Mr(CxHy)w(C)) / Ar(C) = (30 * 0.8) / 12 = 24 / 12 = 2
y = (Mr(CxHy)w(H)) / Ar(H) = (30 * 0.2) / 1 = 6 / 1 = 6
Ответ: C2H6