# Chemistry 101

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A gaseous compound has a density of 0.355 g/L at 17 degree celcius and 189 mmHg. What is the molar mass of the compound?

• Chemistry 101 -

Use PV = nRT which can be re-arranged to
PV = (g/M)RT where M is the molar mass. Since density = g/L, we can substitute to make it
PVM = gRT and
PM = (g/V)RT.
Solve for M

• Chemistry 101 -

what is mmHg

• Chemistry 101 -

thank you

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