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# Calculating the Number of Moles of Gas Inside a Football

CHEM-CN8KJD

If a 4.2 L football is inflated to a pressure of 0.90 atm at ${27}^{o}C$, how many moles of gas are inside the football assuming the gas can be treated ideally?

$(R=0.0821\cfrac{L\times atm}{mole\times K})$

A

$0.19\text{ moles}$

B

$1.7\text{ moles}$

C

$0.15\text{ moles}$

D

$2.1\text{ moles}$