V(C2H4, C2H2, CH4) = 358.4 lV(C2H4):V(C2H2):V(CH4) = 1:4:3
m(C2H4, C2H2, CH4) - ?
для начала найдём одну часть:
1x + 4x + 3x = 358.4
8x = 358.4
x = 44.8
отсюда по соотношению:
V(C2H4) = 44.8 l
V(C2H2) = 44.8 l * 4 = 179.2 l
V(CH4) = 44.8 l * 3 = 134.4 l
n(C2H4) = 44.8 l / 22.4 l / mol = 2 mol
n(C2H2) = 179.2 l / 22.4 l / mol = 8 mol
n(CH4) = 134.4 l / 22.4 l / mol = 6 mol
m(C2H4) = 2 mol * 28 g / mol = 56 g
m(C2H2) = 8 mol * 26 g / mol = 208 g
m(CH4) = 6 mol * 16 g / mol = 96 g
m(C2H4, C2H2, CH4) = 56 g + 208 g + 96 g = 360 g
Ответ: 360 g .
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Answers & Comments
V(C2H4, C2H2, CH4) = 358.4 l
V(C2H4):V(C2H2):V(CH4) = 1:4:3
m(C2H4, C2H2, CH4) - ?
для начала найдём одну часть:
1x + 4x + 3x = 358.4
8x = 358.4
x = 44.8
отсюда по соотношению:
V(C2H4) = 44.8 l
V(C2H2) = 44.8 l * 4 = 179.2 l
V(CH4) = 44.8 l * 3 = 134.4 l
n(C2H4) = 44.8 l / 22.4 l / mol = 2 mol
n(C2H2) = 179.2 l / 22.4 l / mol = 8 mol
n(CH4) = 134.4 l / 22.4 l / mol = 6 mol
m(C2H4) = 2 mol * 28 g / mol = 56 g
m(C2H2) = 8 mol * 26 g / mol = 208 g
m(CH4) = 6 mol * 16 g / mol = 96 g
m(C2H4, C2H2, CH4) = 56 g + 208 g + 96 g = 360 g
Ответ: 360 g .