Homework Answers
Pressure on a given height P can be calculated as,
P = P0 exp ( - (Mg/ RT) h)
Where,
P0 is the atmospheric pressure at sea level.
M is the molar mass of air on Earth.
g is the acceleration due to gravity.
R is the gas constant.
T is the temperature.
As, Mg/R = constant = 0.03416
Therefore the formula become,
P = P0 exp ( -(0.03416) h/T) ... (1)
Given value of P0 = 1 atm , h = 500 m, T = 300 K
Substituting in eq (1),
P = 1. exp ( - ( 0.03416 ) 500/300 ) atm
Therefore , P = 0.944 atm ( Answer)
Hence the last option is correct.
Add Answer to:
Assuming that the atmospheric pressure at sea level is 1 atm, what is the pressure at...
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...
The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitroge...
The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3 at 1 atm....
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pre...
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies, since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3...
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?
3) At sea level, where the atmospheric pressure is 1.00 atm, a typical 12-inch party balloon...
3) At sea level, where the atmospheric pressure is 1.00 atm, a typical 12-inch party balloon occupies 14.8 L at room temperature (23 °C). (13 pts) a) What would the volume of the balloon be at the top of Mount Everest (elevation 5.miles), where the temperature is -28 °C and the pressure is 253.0 torr? Assume that no gas is lost while transporting the balloon. (7 pts) b) How many moles of gas are present in the balloon? (6 pts)
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. =...
An Erlenmeyer flask is filled with air at atmospheric pressure (assume we are at sea level...
An Erlenmeyer flask is filled with air at atmospheric pressure (assume we are at sea level for atmospheric pressure) room temperature. It is placed in an ice bath. The flask is removed from the ice bath and warmed back to room temperature. Calculate the percent change in the two pressure readings.
3. An Erlenmeyer flask is filled with air at atmospheric pressure (assume we are at sea...
3. An Erlenmeyer flask is filled with air at atmospheric pressure (assume we are at sea level for atmospheric pressure) and room temperature. It is placed in an ice bath. The flask is removed from the ice bath and warmed back to room temperature. The pressure now reads 0.8943 atm. Calculate the percent change in the two pressure readings. (3 pts)
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...
The partial pressure of O2 in air at sea level is 0.21 atm. The solubility of...
The partial pressure of O2 in air at sea level is 0.21 atm. The solubility of O2 in water at 20 ∘C , at 1 atm gas pressure, is 1.38×10−3 M. Using Henry's law and the data in the introduction, calculate the molar concentration of O2 in the surface water of a mountain lake saturated with air at 20 ∘C and an atmospheric pressure of 660 torr .
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...
The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3 at 1 atm....
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies, since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3...
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?
3) At sea level, where the atmospheric pressure is 1.00 atm, a typical 12-inch party balloon occupies 14.8 L at room temperature (23 °C). (13 pts) a) What would the volume of the balloon be at the top of Mount Everest (elevation 5.miles), where the temperature is -28 °C and the pressure is 253.0 torr? Assume that no gas is lost while transporting the balloon. (7 pts) b) How many moles of gas are present in the balloon? (6 pts)
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. =...
An Erlenmeyer flask is filled with air at atmospheric pressure (assume we are at sea level for atmospheric pressure) room temperature. It is placed in an ice bath. The flask is removed from the ice bath and warmed back to room temperature. Calculate the percent change in the two pressure readings.
3. An Erlenmeyer flask is filled with air at atmospheric pressure (assume we are at sea level for atmospheric pressure) and room temperature. It is placed in an ice bath. The flask is removed from the ice bath and warmed back to room temperature. The pressure now reads 0.8943 atm. Calculate the percent change in the two pressure readings. (3 pts)
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...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago