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# Calculating the Molar Mass of an Ideal Gas

CHEM-01MBY1

If $1.76\text{ g}$ of an ideal gas occupy $1.0\text{ L}$ at standard temperature and pressure (STP), what is the molar mass of the gas?

$\left(R=0.0821\cfrac{L\times atm}{mol\times K}\right)$

A

$4.0\text{ g/mol}$

B

$16\text{ g/mol}$

C

$20\text{ g/mol}$

D

$40\text{ g/mol}$