Question one: Assume that dry air consists of only 20.00% oxygen and 80.00% nitrogen by volume. What...

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Chemistry

Question one: Assume that dry air consists of only 20.00% oxygenand 80.00% nitrogen by volume.
What is the density of dry air at 0.90030 atmand 22.31 âˆ˜C?
Answer in g/L to four significant figures.
Question two: A flask has a volume of 148.5 mL . When filledwith air at a pressure of 834.6 torr and a temperature of 24.74 âˆ˜C,the flask and air have a mass of 67.887 g . When filled with carbondioxide at the same temperature and pressure, the mass of the flaskand CO₂ is 67.992 g .
Part A - What is the mass of the carbon dioxidegas in the flask (when the flask is filled with carbondioxide)?

Answer & Explanation Solved by verified expert

3.8 Ratings (646 Votes)

I have a doubt with problem 2 but I can help in problem 1 With that percent lets calculate the average MW of dry air 02032 08028 288 gmol If PV nRT n mMW so replacing above PV mRTMW P mRTMW V d mV so P dRTMW d PMWRT d 090030 See Answer

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