Long Test 62009 Gas Laws
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Chem2 44/40pts
Long Test 6
Instruction: Write your answer on 1 whole sheet of paper. Write your section and class number at the upper left corner of the first page. All answers and solutions must be presented in an organized manner and written legibly using blue or black ink.
A. Conceptual Questions. Answer in 3 sentences or less. 1. Is it posible for ordinary ice to turn directly into water vapor without passing through the liquid phase? If so, what conditions should be met? 2. When a tire is inflated, volume increases along with pressure. Does this violate the gas laws? Explain how. 3. A drinking glass is totally filled to the rim with water. A piece of cardboard is placed on top. The glass is then turned upside down in mid air. The water inside does not spill. Explain how this is posible. B. Problem Solving 4. At pressure of 1.20 atm and temperature of 55.0 ºC, two samples of the same gas are in two separate containers. The first container has 0.0535 mol of the gas and has a volume of 1.20 L. Container 2 has a volume of 3.60 L. How many moles of the gas does the continer 2 contain? 5. What pressure is required to cause N2 to have a density of 1.00 g/L at 45 ºC? MM N=14.0 g/mol 6. How many moles of H2 gas does it take to fill a 6.00-L container at a pressure of 3.67 atm at 25 ºC? 7. A sample of steam, H2O is completely decomposed to its constituent elements. a. Write the balanced chemical equation. b. If the total pressure of the gases produced is 1.35 atm, which gas exerts a greater partial pressure? c. Derive the equations for calculating the partial pressure of each gas. 1. A ballon used for sampling stratospheric ozone is filled with 150.0 kg of He. What is the volume of the balloon when, a. The balloon starts from a research station in Antartica at sea level where the barrometric pressure is 755 mmHg and the temperature is -25.0 °C. b. The balloon rises to 10,000 ft (3048
m, the height of a medium size mountain) where the instruments report that the temperature is -50 °C and the pressure is 6.368x104 Pa. MM He=4.00 g/mol
Chem2 44/40pts
Long Test 6
Instruction: Write your answer on 1 whole sheet of paper. Write your section and class number at the upper left corner of the first page. All answers and solutions must be presented in an organized manner and written legibly using blue or black ink.
A. Conceptual Questions. Answer in 3 sentences or less. 1. Is it posible for ordinary ice to turn directly into water vapor without passing through the liquid phase? If so, what conditions should be met? 2. When a tire is inflated, volume increases along with pressure. Does this violate the gas laws? Explain how. 3. A drinking glass is totally filled to the rim with water. A piece of cardboard is placed on top. The glass is then turned upside down in mid air. The water inside does not spill. Explain how this is posible. B. Problem Solving 4. At pressure of 1.20 atm and temperature of 55.0 ºC, two samples of the same gas are in two separate containers. The first container has 0.0535 mol of the gas and has a volume of 1.20 L. Container 2 has a volume of 3.60 L. How many moles of the gas does the continer 2 contain? 5. What pressure is required to cause N2 to have a density of 1.00 g/L at 45 ºC? MM N=14.0 g/mol 6. How many moles of H2 gas does it take to fill a 6.00-L container at a pressure of 3.67 atm at 25 ºC? MM H=1.0 7. A sample of steam, H2O is completely decomposed to its constituent elements. a. Write the balanced chemical
equation. b. If the total pressure of the gases produced is 1.35 atm, which gas exerts a greater partial pressure? c. Derive the equations for calculating the partial pressure of each gas. 1. A ballon used for sampling stratospheric ozone is filled with 150.0 kg of He. What is the volume of the balloon when, a. The balloon starts from a research station in Antartica at sea level where the barrometric pressure is 755 mmHg and the temperature is -25.0 °C. b. The balloon rises to 10,000 ft (3048 m, the height of a medium size mountain) where the instruments report that the temperature is -50 °C and the pressure is 6.368x104 Pa. MM He=4.00 g/mol
Long Test 6
Instruction: Write your answer on 1 whole sheet of paper. Write your section and class number at the upper left corner of the first page. All answers and solutions must be presented in an organized manner and written legibly using blue or black ink.
A. Conceptual Questions. Answer in 3 sentences or less. 1. Is it posible for ordinary ice to turn directly into water vapor without passing through the liquid phase? If so, what conditions should be met? 2. When a tire is inflated, volume increases along with pressure. Does this violate the gas laws? Explain how. 3. A drinking glass is totally filled to the rim with water. A piece of cardboard is placed on top. The glass is then turned upside down in mid air. The water inside does not spill. Explain how this is posible. B. Problem Solving 4. At pressure of 1.20 atm and temperature of 55.0 ºC, two samples of the same gas are in two separate containers. The first container has 0.0535 mol of the gas and has a volume of 1.20 L. Container 2 has a volume of 3.60 L. How many moles of the gas does the continer 2 contain? 5. What pressure is required to cause N2 to have a density of 1.00 g/L at 45 ºC? MM N=14.0 g/mol 6. How many moles of H2 gas does it take to fill a 6.00-L container at a pressure of 3.67 atm at 25 ºC? 7. A sample of steam, H2O is completely decomposed to its constituent elements. a. Write the balanced chemical equation. b. If the total pressure of the gases produced is 1.35 atm, which gas exerts a greater partial pressure? c. Derive the equations for calculating the partial pressure of each gas. 1. A ballon used for sampling stratospheric ozone is filled with 150.0 kg of He. What is the volume of the balloon when, a. The balloon starts from a research station in Antartica at sea level where the barrometric pressure is 755 mmHg and the temperature is -25.0 °C. b. The balloon rises to 10,000 ft (3048
m, the height of a medium size mountain) where the instruments report that the temperature is -50 °C and the pressure is 6.368x104 Pa. MM He=4.00 g/mol
Chem2 44/40pts
Long Test 6
Instruction: Write your answer on 1 whole sheet of paper. Write your section and class number at the upper left corner of the first page. All answers and solutions must be presented in an organized manner and written legibly using blue or black ink.
A. Conceptual Questions. Answer in 3 sentences or less. 1. Is it posible for ordinary ice to turn directly into water vapor without passing through the liquid phase? If so, what conditions should be met? 2. When a tire is inflated, volume increases along with pressure. Does this violate the gas laws? Explain how. 3. A drinking glass is totally filled to the rim with water. A piece of cardboard is placed on top. The glass is then turned upside down in mid air. The water inside does not spill. Explain how this is posible. B. Problem Solving 4. At pressure of 1.20 atm and temperature of 55.0 ºC, two samples of the same gas are in two separate containers. The first container has 0.0535 mol of the gas and has a volume of 1.20 L. Container 2 has a volume of 3.60 L. How many moles of the gas does the continer 2 contain? 5. What pressure is required to cause N2 to have a density of 1.00 g/L at 45 ºC? MM N=14.0 g/mol 6. How many moles of H2 gas does it take to fill a 6.00-L container at a pressure of 3.67 atm at 25 ºC? MM H=1.0 7. A sample of steam, H2O is completely decomposed to its constituent elements. a. Write the balanced chemical
equation. b. If the total pressure of the gases produced is 1.35 atm, which gas exerts a greater partial pressure? c. Derive the equations for calculating the partial pressure of each gas. 1. A ballon used for sampling stratospheric ozone is filled with 150.0 kg of He. What is the volume of the balloon when, a. The balloon starts from a research station in Antartica at sea level where the barrometric pressure is 755 mmHg and the temperature is -25.0 °C. b. The balloon rises to 10,000 ft (3048 m, the height of a medium size mountain) where the instruments report that the temperature is -50 °C and the pressure is 6.368x104 Pa. MM He=4.00 g/mol
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