Homework 7

# Homework 7 - fernandez (jf23742) Homework 7 Brodbelt...

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fernandez (jf23742) – Homework 7 – Brodbelt – (53765) 1 This print-out should have 23 questions. Multiple-choice questions may continue on the next column or page – Fnd all choices before answering. Homework 7: Gases 001 10.0 points The same number of grams of NH 3 and O 2 are placed in separate bulbs of equal vol- ume and temperature under conditions when both gases behave ideally. Which statement is true? 1. The pressure in the NH 3 bulb is greater than the pressure in the O 2 bulb. 2. The pressure in the O 2 bulb is greater than the pressure in the NH 3 bulb. 3. Both bulbs contain the same number of moles of gas. 4. The bulb containing O 2 contains more molecules of gas. 5. The pressures in the two bulbs are the same. 002 10.0 points How many molecules are in 1.00 liter of O 2 gas at 56 C and 821 torr. 1. 32 molec 2. 2 . 24 × 10 23 molec 3. 1 . 83 × 10 25 molec 4. 2 . 41 × 10 22 molec 5. 4 . 00 × 10 - 2 molec 003 10.0 points At STP, 6.0 grams of CO gas will occupy a volume of 1. 3.5 liters. 2. 4.8 liters. 3. 22.4 liters. 4. 5.6 liters. 5. 2.24 liters. 004 10.0 points A ±ask contains 0.123 moles of an ideal gas that occupies 781 mL. A second ±ask at the same temperature contains 0.0712 moles of the same gas. The pressure is the same in both ±asks. What is the volume of the second ±ask? 1. 452 mL 2. 89,180 mL 3. 1350 mL 4. 904 mL 5. 6.8 mL 005 10.0 points What is the volume of 0.500 moles of an ideal gas at 273 K and 760 torr? 1.

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## This note was uploaded on 07/27/2009 for the course CH 89959 taught by Professor Cowley during the Spring '09 term at University of Texas.

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Homework 7 - fernandez (jf23742) Homework 7 Brodbelt...

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