Answer to Question #109367 in General Chemistry for Ashley

Question

How many liters is 5.78 moles of CH3

Answer 1

Notification:

There is a typo in the question text: "How many liters is 5.78 moles of CH3"

There is no stable substance with the molecular formula CH3.

Obviously the right question - how many liters is 5.78 moles of CH4?

Answer:

СН₄ - methan. Methane is usually a gas.

One mole of any gas under normal conditions (STD: t=25^oC, p=1atm. ) occupies a volume of 22.4 liters (i.e., the molar volume of a gas at STD is 22.4L*mol^-1).

Thus, 5.78moles of CH₄ occupy 5,78mol*22,4L*mol^-1=129.5L

So, 5.78 moles of CH4 occupy 129.5 liters.