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General Chemistry

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Counting the Atoms of a Gas from Given Parameters

CHEM-BDY1GD

An ideal gas is occupying a 5.0 L chamber with a temperature of 350 K and pressure of 2.1 atm.

If the gas is monatomic, how many atoms can be found on average in a cubic centimeter?

$R=0.082 \frac { L\times atm }{ mol\times K }$, $1 { cm }^{ 3 }= 0.001L$, ${ N }_{ A }=6.022\times { 10 }^{ 23 }\frac { 1 }{ mol }$

A

$2.2\times { 10 }^{ 23} \text{ atoms}$

B

$4.4\times { 10 }^{ 22 } \text{ atoms}$

C

$2.2\times { 10 }^{ 20 } \text{ atoms}$

D

$4.4\times { 10 }^{ 19 } \text{ atoms}$