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Question

what pressure is exerted by 0.450 ,ol of gas at 25 degress C if the gas is in a 0.650-L container?

Answer 1

When given information about a gas that contain these parameters you will most likely use the gas law eqn. / ideal gas eqn.:

PV = nRT

To calculate P

convert the temp from C to K - therefore 25C = 298 K

convert vol. from L to m^3 :

1 L = 1 dm^3 = 0.001 m^3

therefore 0.650 L = 0.00065 m^3

Hence,

PV = nRT

P = 0.450 * 8.31 * 298 / 0.00065 =1714.4 kPa