Question

How many moles of Ar gas are
present in a container with a
volume of 78.4 L at STP?

Answer 1

Answer:

1 mole of a gas at STP occupies 22.4 L volume

Now the volume is given =78.4 therefore,

No. of moles of gas = 78.4 ÷ 22.4 = 3.5 moles

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