Infinity Phoenix
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1. At 46°C a sample of ammonia gas exerts a pressure of 5.3 atm. What is the pressure when the volume of the gas is reduced to one-fifth (0.2) of the original value at the same temperature?
2. A gas-filled balloon having a volume of 2.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 multiplied by 10-3 atm, respectively. Calculate the final volume of the balloon.
3. A 39.5 L volume of methane gas is heated from 25°C to 90°C at constant pressure. What is the final volume of the gas?
4. What volume will 4.0 moles of sulfur hexafluoride (SF6) gas occupy if the temperature and pressure of the gas are 128°C and 9.4 atm?
5. Ammonia burns in oxygen gas to form nitric oxide (NO) and water vapor. How many volumes of NO are obtained from one volume of ammonia at the same temperature and pressure?
6. A sample of air occupies 3.8 L when the pressure is 1.2 atm.
(a) What volume does it occupy at 4.5 atm? (b) What pressure is required in order to compress it to 0.055 L? (The temperature is kept constant.)
7. A sample of nitrogen gas kept in a container of volume 1.5 L and at a temperature of 35°C exerts a pressure of 4.7 atm. Calculate the number of moles of gas present.
8. A piece of sodium metal undergoes complete reaction with water as follows: 2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g)
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 370 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
9. A gas occupying a volume of 205 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
This is my Plan B if I get stuck. Try as many as you can, don't worry about doing everything. Thanks
2. A gas-filled balloon having a volume of 2.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 multiplied by 10-3 atm, respectively. Calculate the final volume of the balloon.
3. A 39.5 L volume of methane gas is heated from 25°C to 90°C at constant pressure. What is the final volume of the gas?
4. What volume will 4.0 moles of sulfur hexafluoride (SF6) gas occupy if the temperature and pressure of the gas are 128°C and 9.4 atm?
5. Ammonia burns in oxygen gas to form nitric oxide (NO) and water vapor. How many volumes of NO are obtained from one volume of ammonia at the same temperature and pressure?
6. A sample of air occupies 3.8 L when the pressure is 1.2 atm.
(a) What volume does it occupy at 4.5 atm? (b) What pressure is required in order to compress it to 0.055 L? (The temperature is kept constant.)
7. A sample of nitrogen gas kept in a container of volume 1.5 L and at a temperature of 35°C exerts a pressure of 4.7 atm. Calculate the number of moles of gas present.
8. A piece of sodium metal undergoes complete reaction with water as follows: 2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g)
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 370 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
9. A gas occupying a volume of 205 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
This is my Plan B if I get stuck. Try as many as you can, don't worry about doing everything. Thanks