Gases Quiz 2

# Gases Quiz 2 - What will be the gas pressure when the...

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CHEM 120 Chapter 6 Gases Practice Quiz 2 Name ________________________________ 2pts 1. 1 atm = _ 760 ____ torr 1atm = _ 760 ____ mm Hg (error, should not be mg of Hg) 2pts 2. A 15.0 Liter ballon contain He gas at a pressure of 700 torr. What is the new pressure of the He at: (there is no change in temperature A) 1500 ml = 1.5 L P 1 = P 2 V 1 V 2 700 torr = P 2 15.0 L 1.5 L P 2 = 700 x 1.5 = 70 torr 15.0 B) 30 liters P 1 = P 2 V 1 V 2 700 torr = P 2 15.0 L 30 L P 2 = 700 x 30 = 1400 torr 15.0 2pys 3. In a gas mixture, the partial pressure are nitrogen 400 torr, oxygen 200 torr, and helium 150 torr. What is the total pressure (torr) exerted by the gas mixture? P total = P N2 + P O2 P He = 400 torr + 200 torr + 150 torr P total = 750 torr

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2pts 4. A gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 K.
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Unformatted text preview: What will be the gas pressure when the temperature changes to 450 K? P 1 = 1.5 atm P 2 = ? T 1 = 320 K T 2 = 450 K P 1 = P 2 T 1 T 2 P 2 = P 1 T 2 = 1.5 atm x 450 K = 2.1 atm T 1 320 K 1pt 5. What is inverse relationship? As one variable increases the other decreases or as one variable decreases the other increases. For example in Boyles law which is an inverse relationship as pressure increases, volume decreases 1pt 6. True or False: During the expiration cycle, the pressure of air in the lungs drops below atmospheric pressure. FALSE Expiration à Breathe out à empty your lungs à volume in your lungs decreases à pressure inside your lungs increases à atmospheric pressure outside your body increases...
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## This test prep was uploaded on 04/10/2008 for the course CHEM 231 taught by Professor Hanover during the Spring '08 term at Lansing.

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Gases Quiz 2 - What will be the gas pressure when the...

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