дано
m(в ва) = 12 g
n(CO2) = 0.6 mol
m(H2O) = 14.4 g
D(H2)= 30
формулу - ?
M(ф - ла) = D(H2) * 2 = 30 *2 = 60 g/mol
n(C) = n(CO2) = 0.6 mol
M(C) =12 g/mol
m(C) = n(C) * M(C) = 0.6 * 12 = 7.2 g
n(H) = 2*m(H2O) / M(H2O) = 2*14.4 / 18 = 1.6 mol
M(H) = 1 g/mol
m(H) = n(H) * M(H) = 1.6 * 1 = 1.6 g
m(O) = m(в ва) - ( m(H) + m(O)) = 12 - (7.2 + 1.6 ) = 3.2 g
n(O) = m(O) / M(O) = 3.2 / 16 = 0.2 mol
n(C) : n(H) : n(O) = 0.6 : 1.6 : 0.2 ==> 3 : 8 : 1
C3H8O
ответ C3H8O
Объяснение:
дано
m(в ва) = 12 g
n(CO2) = 0.6 mol
m(H2O) = 14.4 g
D(H2)= 30
формулу - ?
M(ф - ла) = D(H2) * 2 = 30 *2 = 60 g/mol
n(C) = n(CO2) = 0.6 mol
M(C) =12 g/mol
m(C) = n(C) * M(C) = 0.6 * 12 = 7.2 g
n(H) = 2*m(H2O) / M(H2O) = 2*14.4 / 18 = 1.6 mol
M(H) = 1 g/mol
m(H) = n(H) * M(H) = 1.6 * 1 = 1.6 g
m(O) = m(в ва) - ( m(H) + m(O)) = 12 - (7.2 + 1.6 ) = 3.2 g
n(O) = m(O) / M(O) = 3.2 / 16 = 0.2 mol
n(C) : n(H) : n(O) = 0.6 : 1.6 : 0.2 ==> 3 : 8 : 1
C3H8O
ответ C3H8O
Объяснение: