you have 46.3g of O2 gas in a container with twice the volume as one with CO2 gas. The pressure and temperature of both containers are the same. Calculate the mass of carbon dioxide gas you have in the container.

How do you start this?

Question

you have 46.3g of O2 gas in a container with twice the volume as one with CO2 gas. The pressure and temperature of both containers are the same. Calculate the mass of carbon dioxide gas you have in the container.

How do you start this?

aaronq · Answer

you know that volume is proportional to moles, so find the moles of $O_2$, multiply them by 2 to find the moles of $CO_2$... because the volume is twice that of $O_2$.

anonymous · Answer

When you get moles of O2 (which i got 1.45) then multiply it by 2 (2.9), that would be moles of CO2 then?

anonymous · Answer

Nvm, it'll be for O2 right. What do you do after you multiply by 2

aaronq · Answer

no it'll be for CO2, you've already found the moles of O2.

anonymous · Answer

then you change moles of CO2 (2.9) to grams?

anonymous · Answer

my answer is off

aaronq · Answer

oh wait, i read it wrong. the tank with O2 has twice the volume, so you need to divide by 2, not multiply

anonymous · Answer

got it. thank you!

aaronq · Answer

no probs!