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Автор - stik701

Алканы,помогите пожалуйста))

Ответ

Проверено экспертом

Автор - Platinum15
1)
M(C4H10) = 58 г/моль
m(C4H10) = 2*58 =116 г

2)
V(C2H6) = 6*22.4 =134.4 л

3)
V(СH4) = 224 л
ню(СH4) = 224/22.4 = 10 моль
M(CH4) = 16 г/моль
m(CH4) = 16*10 = 160 г

4)
M(C5H12) = 72 г/моль
ню(C5H12) = 100/72 = 1.4 моль
V(C5H12) = 22.4 *1.4 = 31 л

5)
M(C3H8) = 36 +8 = 44 г/мол 
это пропан

Ответ

Автор - lena85
1) 
C4H10
m = n*M
M = 12*4 + 10 = 58 г/моль
m =  2*58 = 116 г

2) 
C2H6
V = Vm * n
V = 22,4 * 6 = 134,4 л

3)
CH4 
m = n*M
n = V/Vm
n = 224/22,4 = 10 моль
M = 12 + 4 = 16 г/моль
m = 10*16 = 160 г

4) 
C5H12
V = Vm*n 
n = m/M 
M = 12*5 + 12 = 72 г/моль
n = 100/72 = 1,4 моль
V = 22,4 * 1,4 = 31,36 л

5) 
C3H8 = 12*3 + 8 = 44 г/моль

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