Question

Qual o volume ocupado por 35g de CO nas CNTP? Dados: MM CO=28g/mol ; V molar=22,4L.
a) 10L
b) 22,4L
c) 28L
d) 43,8L
e) 8L

Answer 1

Explicação:

$1mol\ CO ~~~~~~~~ 28g\ CO~~~~~~~~~~ 22,4L\ CO\\~~~~~~~~~~~~~~~~~~~~~35g\ CO ~~~~~~~~~~~~~x\\\\\dfrac{28}{35} =\dfrac{22,4}{x}\\\\\dfrac{4}{5} =\dfrac{22,4}{x} \\\\4x=(22,4).5\\\\4x= 112 \\\\x=\dfrac{112}{4}\\\\\boxed{\boxed{x=28L}}$

Resposta C