Three balloons filled with three diffferent gaseous compounds each have a volume of 22.4 L at STP. Would these balloons have the same mass or contain the same number of molecules? Explain.

3 answers

22.4 L of any gas at STP is a mol of the gas. All will contain the same number of molecules since that is 1 mol of molecules; however, they will not have the same mass because different gases have different molar masses.

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