Gas Law Chemistry Question Pressure in Mercury?

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Calc Guy

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If 19.0 grams of CO_2 gas has a volume of 0.11 L at 350 K, what is its pressure in millimeters of mercury?

How do I go about solving this question. I know that PV=NRT , but how do I get to MM of Mercury?

Thanks.
 
you take the 19.0 grams of CO2, find it's molar mass and from that calculate the number of moles of CO2.

You plug it all into the equation, PV=nrT
which then becomes (pressure)(0.11L)=(#moles CO2)(8.31)(350 K)

the answer for pressure that you get is in Kpa

you then do a ratio because 101.3 Kpa = 760 mm Hg
 
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