# Chemistry

Use molar volume to solve the following problems at STP.

Find the volume mL occupied by 0.400 mole He.

Find the number of grams of neon contained in 10.2 L Ne gas

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1. a. Use PV = nRT

b. I presume this is at STP. You know that 1 mole Ne gas occupies 22.4 L at STP. So how many moles is 10.2 L?

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