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Chemistry 8 Online
OpenStudy (anonymous):

HELP!!!!!! A volume of 18.0 L contains a mixture of 0.250 mole N2 , 0.250 mole O2 , and an unknown quantity of He. The temperature of the mixture is 0 ∘C , and the total pressure is 1.00 atm . How many grams of helium are present in the gas mixture?

OpenStudy (aaronq):

PV=nRT n=0.25+0.25+x x=moles of helium -> convert to grams after

OpenStudy (anonymous):

so whats the answer? @aaronq

OpenStudy (aaronq):

lol that's for you to compute

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