Question

16 g of oxygen gas is enclosed in a 1 dm³ flask at 25°C. Calculate the pressure exerted by the gas, if the molecular mass( molar mass ) of any gas occupies 22.4 litres at S.T.P.​

Answer 1

Answer:

Dear Student,

Please find below the solution to the asked query:

Given mass of oxygen = 16g

Molar mass of Oxygen gas = 32g/mol

No.of moles of Oxygen = 16/32

                                   n    = 0.5mol

Given Volume = 1dm3 = 1L = 1 ×10-3m3

      Gas constant , R = 8.314JK-1mol-1

                               T = 298K

Substituting the values in the equation:

                          P = nRTV

We get,             P =  0.5×8.314×2981×10−3

                          = 1238 × 103Pa

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Answer 2

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HERE IS UR ANSWER

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for oxygen

Given mass=16

molar mass=32

n=16/32=0.5

given volm=1dm^3=1L=10^-3m^3

R=8.314

T=298K

P=nRTV

P=1238×10^-3Pa