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# \what is the volume at stp of a 125.0 ml of a gas at 1.50 atm and 100 C?

do I use PV=nRT? What does each letter represent? or do I use p1V1=P2V2?

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- Roger the MoleLv 77 years agoFavorite Answer
P = pressure

V = volume

n = number of moles

R = the gas constant

T = temperature (always in Kelvin)

p1V1=P2V2 doesn't help with the change in T.

You could use PV = nRT twice, but it's quicker to do this:

(125.0 ml) x (1.50 / 1.00) x (273 / (100 + 273)) = 137.2 ml

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