The Ideal Gas Law Answers

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A balloon containing 0.40 mol of a gas with a volume of 5.0 L was deflated to 1.0 L.Which equation should you use to find the final number of moles of gas in the balloon after the deflation?

A
V subscript 2 equals StartFraction V subscript 1 n subscript 2 over n subscript 1 EndFraction.
Option A
B
n subscript 2 equals StartFraction V subscript 2 n subscript 1 over V subscript 1 EndFraction.
Option B
C
n subscript 2 equals StartFraction V subscript 1 n subscript 1 over V subscript 2 EndFraction.
Option C
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What is the final number of moles?

A
0.080 mol
B
0.80 mol
C
2 mol
D
12.5 mol

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