The Bag Is Emptied and Refilled,successively,with Gases X and Y,this

question 47

Multiple Choice

The bag is emptied and refilled,successively,with gases X and Y,this time at 1 atm pressure and a temperature 30°C higher.Assume that the volume of the bag is the same as before.Which one of the following statements is wrong?

• A)The full bag contains fewer molecules of each gas than it did at 0.0°C.
• B)The ratio of the density of gas Y to the density of gas X is the same as at 0.0°C.
• C)The molar masses of the two gases are the same as they were at 0.0°C.
• D)The mass of each gas filling the bag is now 303/273 times the mass held at 0.0°C.
• E)The average velocity of the molecules of gas X at 30°C is higher than it was at 0.0°C.

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