[Alexis87]

20 cm^3 of oxygen is reacted with 20 cm^3 of carbon monoxide.
What are the volumes of the gases remaining, at the original temperature and pressure?

Option A = 0 cm^3 of oxyen , 0 cm^3 of carbon monoxide, 20 cm^3 of carbon dioxide

Option B = 0 cm^3 of oxyen, 0 cm^3 of carbon monoxide, 40 cm^3 of carbon dioxide

Option C = 10 cm^3 of oxyen, 0 cm^3 of carbon monoxide, 20 cm^3 of carbon dioxide

Option D = 10 cm^3 of oxyen, 10 cm^3 of carbon monoxide, 20 cm^3 of carbon dioxide

Which option is the correct answer and why?

Your help will be greatly appreciated. Thanks.

[billnotgatez]

Please read the forum rules.

You have to show your attempts at solving the question to receive help. This is a forum policy.

Hint: To get an understanding what is going on you might write a balanced equation.

[vmelkon]

I think you are suppose to assume that both substances have the same number of molecules per volume. This concept comes from Avogadro.

Write the equation for the reaction. Would all the oxygen get consume or what?