Asked by Mark

rank the gases Ar, N2,CH4, and C2H6 in order of the increasing density at STP
answer: CH4<N2<C2H6<Ar
please help me solve this
Answered by bobpursley
at stp, one mole of each occupies the same volume, so density then in the same order as mole mass.

If you want to work it out at stp,
density CH4=molemassCH4/22.4liters
density N2=molemass N2/22.4 liters

and so one.
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