(Test ID: ins700075) Created with INSPECT and the Online Assessment Reporting System (OARS) For Authorized Use Only

Transcription

1 Print Options Show Test 3 - Gas laws (Test ID: ins700075) Created with INSPECT and the Online Assessment Reporting System (OARS) For Authorized Use Only 1 On the ground, a child's toy balloon contains 4 liters of air on a sunny, clear day. The atmospheric pressure (barometric pressure) is at 760 mmhg. A week later, a hurricane passes over and the pressure drops to 711 mmhg. Using P1V1=P2V2, what is the balloon's volume during the hurricane? A approximately 3.74 liters B approximately 4.27 liters C The same volume, but the temperature is cooler. D The same volume, but the temperature is hotter. 2 For a fixed amount of a gas, the relationship between pressure and temperature when volume is held constant. 3 For a fixed amount of a gas, the relationship between pressure and volume when the temperature is held constant. 4 For a fixed amount of a gas, the relationship between volume and temperature when the pressure is held constant. 5

2 The pressure on 150 ml of a gas is increased from 500 mm Hg to 700 mm Hg at constant temperature. What is the new volume of the gas? A 107 ml B 210 ml C 350 ml D 2333 ml 6 The pressure on 250 ml of a gas is decreased from 800 torr to 600 torr at constant temperature. What is the new volume of the gas? A 50 ml B 188 ml C 333 ml D 450 ml ml of a gas are stored at 600 torr. If the volume of gas is decreased to 200 ml while temperature remains constant, what is the new pressure of the gas? A 83 torr B 550 torr C 650 torr D 750 torr 8 The temperature of 300 ml of gas is increased from 300 K to 600 K while the pressure is held A 150 ml B 450 ml C 600 ml D 900 ml 9 The temperature of 75 ml of gas is decreased from 450 K to 150 K while the pressure is held A 25 ml B 225 ml C 300 ml D 375 ml 10 The temperature of 100 ml of a gas is increased from 20 C to 120 C while the pressure is held A 17 ml B 75 ml C 134 ml D 600 ml 11 Initially, a gas has a pressure of 1.5 atm, a volume of 2.5 L, and a temperature of 200 K. Pressure is raised to 2.0 atm and temperature is increased to 300 K. What is the new volume? A 0.39 L B 1.15 L C 2.6 L D 10.4 L

3 12 A volume of 4.0 m3 of a gas is kept under pressure of 300 kpa at 40 C. The temperature is increased to 140 C while the pressure is increased to 500 kpa. What is the new volume of the gas? A 3.17 m3 B 5.3 m3 C 8.4 m3 D 14 m3 13 An unknown volume of gas is held at a pressure of 400 mmhg and 350 K. The pressure is increased to 800 mmhg and the temperature decreased to 300K. The final volume is measured at 50 L. What was the initial volume of the gas? A 21.4 L B 117 L C 152 L D 285 L ml of a gas is held at a pressure of 4000 torr and a temperature of 50 C. The volume of the gas is decreased to 2500 ml and the pressure is decreased to 2000 torr. What is the new temperature of the gas? A 138 C B 21 C C 135 C D 408 C 15 The temperature of 360 ml of a gas is decreased from 20 C to 40 C while the pressure is held A 180 ml B 286 ml C 453 ml D 720 ml 16 A gas is stored at standard temperature and pressure (STP). The temperature is increased to 100 C while the volume remains unchanged. What is the new pressure of the gas? A 1.37 atm B 100 kpa C 556 mmhg D 7600 mmhg 17 A gas is stored at a pressure of 200 kpa and temperature of 300 K. The temperature is increased to 400 K while the volume remains unchanged. What is the new pressure of the gas? A 54 kpa B 150 kpa C 267 kpa D 740 kpa 18 A gas is stored at a pressure of 1520 mmhg and a temperature of 300 K. The pressure is

4 increased to 2280 mmhg while the volume remains unchanged. What is the new temperature of the gas. A 200 K B 329 K C 450 K D 586 K 19 A gas is stored at a pressure of 400 mmhg and a temperature of 10 C. The pressure is increased to 1200 mmhg while the volume remains constant. What is the new temperature of the gas? A 30 C B 367 C C 576 C D 849 C 20 A gas is stored at a pressure of 1600 mmhg and a temperature of 37 C. The temperature is decreased to 10 C while the volume remains constant. What is the new pressure of the gas? A 139 mmhg B 432 mmhg C 1461 mmhg D 1753 mmhg 21 How many liters of oxygen at STP are used for every 5.00 moles of methane gas that is completely combusted? A 242 L B 10 L C 224 L D 112 L 22 A balloon contains an inert gas occupying a volume of 12.0 L at 25.0 C. The balloon is heated to 50 C. What is the new volume of the balloon if the pressure does not change? A 11.0 L B 11.1 L C 13.0 L D 24.0 L 23 A sample of unknown gas occupies 5.51 L at 1.31 atm. What pressure would this gas exert in a 2520 ml container if the temperature is held constant? A atm B 2.19 atm C 2.86 atm D 18.2 L 24 About how many grams of ammonia would a 11,200 ml of such gas contain at STP? A 4265 g B 9.00 g C 8500 g D 8.50 g 25

5 What volume would 34.0 grams of ammonia occupy at STP? A 2.00 L B 44.8 L C 42.3 L D 48.4 L 26 How many molecules does a sample of an ideal gas contain if it is held in a 5.75 L container at 2.00 atm of pressure, and at a temperature of 25 C? A molecules C molecules B 0.47 molecules D molecules 27 The following temperature is the Celsius equivalent of 100 Kelvin. A 173 K B 212 C C 373 C D 173 C 28 If an ideal gas is in a container and the volume is increased, what would be the effect on the temperature and pressure of the gas? A both the temperature and the pressure increase B the temperature increases and the pressure decreases C the temperature decreases and the pressure increases D both the temperature and the pressure decrease L of a gas are stored at standard temperature and pressure (1 atm = 760 mmhg). If the volume of the gas is increased to 4.00 L at a constant temperature, what is the new pressure of the gas? A 1.00 atm B 1.33 atm C 570 mmhg D 1013 mmhg