Homework Answers
21% Oxygen is present in air composition when it is at sea level. At 8000 feet , the composition of oxygen (O2) in the atmosphere is 15.4% .
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5. At sea level, the atmospheric composition includes about 21% O2. As one increases in altitude...
Suppose you want to climb a mountain that is 19,000 feet tall. The air at that...
Suppose you want to climb a mountain that is 19,000 feet tall. The air at that altitude has a total pressure of about half an atmosphere. The chemical composition of the air is the same as at sea level. Suppose you want to breathe the same partial pressure of oxygen that you normally would breathe at sea level – no more and no less. You decide to breathe bottled air from a tank, and adjust the composition of the air...
The atmospheric pressure varies proportionally from sea level to height, and the air temperature ...
The atmospheric pressure varies proportionally from sea level to height, and the air temperature drops by 6K for every T km increase (a) Draw a cylindrical volume that is height inside the atmosphere, and then calculate the pressure change and expression (dP/dy-pg) depending on the height. (b) obtain the temperature change of the atmosphere accordingto the height y(km) in the place where the sea level (y-0) is at ToK temperature. (c) obtain a barometric equation which allows for the change...
Which statement about atmospheric pressure is false? Select one: a. Atmospheric pressure prevents water in lakes,...
Which statement about atmospheric pressure is false? Select one: a. Atmospheric pressure prevents water in lakes, rivers, and oceans from boiling away. b. The warmer the air, the lower the atmospheric pressure. c. As air becomes thinner, its density decreases. d. With an increase in altitude, atmospheric pressure increases as well. e. Air actually has weight.
16. At a high altitude water boils at 95°C instead of 100°C as at sea level...
16. At a high altitude water boils at 95°C instead of 100°C as at sea level because A) the atmospheric pressure is greater. B) the atmospheric pressure is less. C) the climate is cooler. D) the vapor pressure of water is greater
102. **Atmospheric pressure is related to height above sea level according to an exponential model. Suppose...
102. **Atmospheric pressure is related to height above sea level according to an exponential model. Suppose the pressure at 18,000 feet is half that at sea level. Find the value of k in the continuous model and explain what the value of k tells you. Find the equation and use it to estimate the pressure at 1000 feet, as a percentage of the pressure at sea level. (A) (B) (C) (D) (E) Less than 20% Between 20% and 40% Between...
pp Composition of the earth's atmosphere at sea level. Gas ppm methane 1.79 helium 5.24 25....
pp Composition of the earth's atmosphere at sea level. Gas ppm methane 1.79 helium 5.24 25. The concentrations of methane and He in the atmosphere at sea level are given in the table above. What is the combined pressure of these two gases when ambient pressure is 1.0 atm? A. 3.45 × 10 - atm B. 7.03 x 10-4 atm c. 3.45 10 atm D. 7.03 10 atm There is not enough information to answer the question
The mass percentage composition of dry air at sea level is approximately N2: 75.5; O2: 23.2;...
The mass percentage composition of dry air at sea level is approximately N2: 75.5; O2: 23.2; Argon: 1.3. What is the partial pressure of each component when the total pressure is 1.60 atm?
2. A gas occupies a volume of 10.0 L at the sea level. The atmospheric pressure...
2. A gas occupies a volume of 10.0 L at the sea level. The atmospheric pressure is 102 kPa, The temperature is 27.0 °C. What will be the volume of the balloon under 10 feet of sea water where the pressure is 1.5 atm and temperature is 17.0 "C?
At 30,000 feet above sea level, atmospheric pressure is only 224 torr. That’s why airplane cabins...
At 30,000 feet above sea level, atmospheric pressure is only 224 torr. That’s why airplane cabins are pressurized. There isn’t enough air for you to breathe outside the plane! If we took a balloon filled to 3.86L at room temperature (21°C) and 0.947 atm, what would its volume be at 30,000 feet above sea level (outside the airplane!) if the temperature also reduced to -35.°C?
At sea level, water boils at 100 °C, and the absolute atmospheric pressure is 101 kPa....
At sea level, water boils at 100 °C, and the absolute atmospheric pressure is 101 kPa. As the atmospheric pressure above water decreases, the temperature required for boiling also decreases, at a rate of 3.1 kPa per "C. For the system shown below: a. What is the absolute atmospheric pressure at an elevation of 4100 m, assuming a constant unit weight of air of 11.80 N/m3? b. What will be the boiling temperature for water at this elevation? Elev. =...
The atmospheric pressure varies proportionally from sea level to height, and the air temperature drops by 6K for every T km increase (a) Draw a cylindrical volume that is height inside the atmosphere, and then calculate the pressure change and expression (dP/dy-pg) depending on the height. (b) obtain the temperature change of the atmosphere accordingto the height y(km) in the place where the sea level (y-0) is at ToK temperature. (c) obtain a barometric equation which allows for the change...
Which statement about atmospheric pressure is false? Select one: a. Atmospheric pressure prevents water in lakes, rivers, and oceans from boiling away. b. The warmer the air, the lower the atmospheric pressure. c. As air becomes thinner, its density decreases. d. With an increase in altitude, atmospheric pressure increases as well. e. Air actually has weight.
16. At a high altitude water boils at 95°C instead of 100°C as at sea level because A) the atmospheric pressure is greater. B) the atmospheric pressure is less. C) the climate is cooler. D) the vapor pressure of water is greater
102. **Atmospheric pressure is related to height above sea level according to an exponential model. Suppose the pressure at 18,000 feet is half that at sea level. Find the value of k in the continuous model and explain what the value of k tells you. Find the equation and use it to estimate the pressure at 1000 feet, as a percentage of the pressure at sea level. (A) (B) (C) (D) (E) Less than 20% Between 20% and 40% Between...
pp Composition of the earth's atmosphere at sea level. Gas ppm methane 1.79 helium 5.24 25. The concentrations of methane and He in the atmosphere at sea level are given in the table above. What is the combined pressure of these two gases when ambient pressure is 1.0 atm? A. 3.45 × 10 - atm B. 7.03 x 10-4 atm c. 3.45 10 atm D. 7.03 10 atm There is not enough information to answer the question
2. A gas occupies a volume of 10.0 L at the sea level. The atmospheric pressure is 102 kPa, The temperature is 27.0 °C. What will be the volume of the balloon under 10 feet of sea water where the pressure is 1.5 atm and temperature is 17.0 "C?
At sea level, water boils at 100 °C, and the absolute atmospheric pressure is 101 kPa. As the atmospheric pressure above water decreases, the temperature required for boiling also decreases, at a rate of 3.1 kPa per "C. For the system shown below: a. What is the absolute atmospheric pressure at an elevation of 4100 m, assuming a constant unit weight of air of 11.80 N/m3? b. What will be the boiling temperature for water at this elevation? Elev. =...
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