of gas did I collect 8. If I fill my tire with air inside my garage at 75 to a p

Question

of gas did I collect 8. If I fill my tire with air inside my garage at 75 to a pressure of 36 psi, what will the ? partial pressure due to Nitrogen be when I drive outside on a freezing day of 3 9. What would the density of Neon gas be at 30°C and 1.02 atm? 10. How fast does an average molecule of O2g) travel? 11. If 0.32mole of Ne gas, 0.25 mole of N2 gas, and 0.20 mole of He gas, are mixed and the pressure is found to be 1.30 atm at 300K, what is the partial pressure of each gas and what is the volume each gas occupies?

Explanation / Answer

Q8

T = 75F

P = 36 psi

P-N2 in a T = 3 F

initial P-N2 --> 0.79*36 = 28.44 psi of N2 at T = 75°F = 75+460 = 535 R

then

P1/T1 = P2/T2

P 2= P1*T2/T1 = (28.44 )(3+460)/535

P2 = 24.612 psi of N2

Q9

Density of Neon

Apply Ideal Gas Law,

PV = nRT

where

P = absolute pressure; V = total volume of gas

n = moles of gas

T = absolute Temperature; R = ideal gas constant

D = mass / volume and Molar volume = n/V

MW = molar weight of sample

Then,

PV = nRT; get molar volume

n/V = P/(RT)

get mass -> n = mass/MW

mass/(MW*V) = P/(RT)

D = mass/V

D/MW = P/(RT)

D = P*MW/(RT)

D = (1.02)(20.1797 )/(0.082*303)

D = 0.8284 g /L

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