What is the mass of methane (CH(adsbygoogle = window.adsbygoogle || []).push({}); _{4}) if it occupies 32.3 L at STP?

We got a whole bunch of these problems on a worksheet with minimal instruction. If somebody could please aid me in solving this one, then I should be able to solve the rest.

I assume that I must first find the masses of the individual components...

C = 12.0107 * 1 = 12.0107

+H = 1.00794 * 4 = 4.03176

---------------------------

16.0483

Then I honestly don't know what to do... I don't want the answer; I'd just really appreciate if somebody could show me how to do this. I tried searching for a guide online, but none of them really had what I was looking for.

Thank you!

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# Simple Mole Conversions

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