Air a. What is the volume of air in the room where you are right now?...
Air
a. What is the volume of air in the room where you are right now? (You can measure the length, width, and height of the room with a measuring tape, or you can estimate these quantities. Just make sure you convert your answer to SI units.)
b. What is the temperature in this room? (in SI units)
c. Look up the current barometric pressure in your area, and convert it to SI units.
d. Use the information from steps 6,7, and 8, along with the ideal gas law to calculate the number of moles of air molecules in this room 10.How many air molecules are in the room?
e.The air around us is roughly 78% nitrogen (N2) and 21% oxygen (O2). Find the number of both nitrogen and oxygen molecules in this room by multiplying your answer to step 10 by each of these percentages.
f.Each nitrogen molecule (N2) is composed of two nitrogen atoms. What is the total mass of N2 in this room?
g.Each oxygen molecule (O2) is composed of two oxygen atoms. What is the total mass of O2 in this room?
h.Use the total mass of N2 and O2, along with the volume of the room, to calculate the density of air, and compare it to the accepted value of 1.2 kg/m3 .
x.Do an internet search to determine which substances account for the small fraction of air which is not composed of nitrogen or oxygen.
Homework Answers
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Air
a. What is the volume of air in the room where
you are right now?...
1. In a room full of air, the air is mainly composed of Nitrogen and Oxygen...
1. In a room full of air, the air is mainly composed of Nitrogen and Oxygen molecules (both at room temperature). Find (to two significant figures) the values of Vrms for both molecules. (Eq. (20.26) relates Vrms to absolute temperature.) W A (97°07) = suda SW 1°xɛ Si on n oin onando CITI A ini 20 SUOISSAdy som innba
An apartment has a living room whose dimensions are 3.0 m x 5.5 m x 6.3...
An apartment has a living room whose dimensions are 3.0 m x 5.5
m x 6.3 m. Assume that the air in the room is composed of 79%
nitrogen (N2) and 21% oxygen (O2). At a
temperature of 22 °C and a pressure of 1.01 x 105 Pa,
what is the mass (in grams) of the air?
Unit Num ЬеґТо"097524e3
MODEL 3: PARTIAL PRESSURE Dry air is 78% nitrogen, 21% oxygen, and 1% argon. A percentage...
MODEL 3: PARTIAL PRESSURE Dry air is 78% nitrogen, 21% oxygen, and 1% argon. A percentage is a ratio: "78%" means that out of 100 particles 78 will be nitrogen, or 0.78 as a fraction. Such fractions are unitless. CRITICAL THINKING QUESTIONS 15. Approximately what is the pressure in the room where you are working? (Include the units.) 16. What three gases are causing this total pressure? 17. What fraction (not percent) of air molecules are nitrogen molecules? Oxygen molecules?...
door. Room A, however, is Wa Which room contains the greater mass of air? Xp Problem...
door. Room A, however, is Wa Which room contains the greater mass of air? Xp Problem 1.12. Calculate the average volume per molecule for an ideal gas at take the cube root to get an estimate of the average distance between molecules. How does this distance room temperature and atmospheric pressure. Then compare to the size of a small molecule like N2 or H20? tely the number of protons in a gram of
A physics lecture room has a volume of 248 m3 . Part A For a pressure...
A physics lecture room has a volume of 248 m3 . Part A For a pressure of 1.00 atm and a temperature of 26.0 ∘C, use the ideal-gas law to estimate the number of air molecules in the room. Assume all the air is N2. Part B Calculate the particle density-that is, the number of N2 molecules per cubic centimeter. Express your answer to three significant figures and include the appropriate units. Part C Calculate the mass of the air...
A physics lecture room has a volume of 278 m^3 . Part A For a pressure...
A physics lecture room has a volume of 278 m^3 . Part A For a pressure of 1.00 atm and a temperature of 27.0 ∘C, use the ideal-gas law to estimate the number of air molecules in the room. Assume all the air is N2. Express your answer to three significant figures and include the appropriate units. N = ? molecules Part B Calculate the particle density-that is, the number of N2 molecules per cubic centimeter. Express your answer to...
a typical room is 4.0 m long, 5.0 m wide, and 2.5 m high. what is...
a typical room is 4.0 m long, 5.0 m wide, and 2.5 m high. what is the total mass of oxygen in the room assuming that the gas in the room is STP and that air contains 22% oxygen and 79% nitrogen? is by volume
The air on Venus is composed, roughly, of 95% CO2 and 5% N2 by mass. Furthermore,...
The air on Venus is composed, roughly, of 95% CO2 and 5% N2 by mass. Furthermore, the surface pressure on Venus is 92,000 mb and the surface temperature is a whopping 467 C. (a) Assuming that the percentages of CO2 and N2 are constant in Venus' atmosphere, what is the specific gas constant (in mass units) for Venus? (b) What is the density of air at Venus' surface and how many molecules occupy 1 cm^3? (c) Compare these values to...
I need your help please with these two questions. My Thermodynamics exam is tomorrow, like and comment are rewar...
I need your help please with these two questions. My
Thermodynamics exam is tomorrow, like and comment are rewarded for
good explanation of the answers
(c) The molar mass of oxygen atoms is 16.0g mol-1. The oxygen molecule O2 can be considered as two massive points (representing the oxygen atoms) separated by a distance of 1.21 x 10-10 m. The origin of the Cartesian coordinate system is placed in the molccular centre of mass and the a-axis is aligned along...
Permanent & Variable Atmospheric Gases Percent of Atmosphere (0% H,O) 78% 21% 1% Percent of Atmosphere...
Permanent & Variable Atmospheric Gases Percent of Atmosphere (0% H,O) 78% 21% 1% Percent of Atmosphere (1% H,O) 77% Percent of Atmosphere 12% H,O) 76% 21% 1% 2% Percent of Atmosphere (3% H,O) 76% 20% 1% 3% Percent of Atmosphere (4% H,0) 75% 20% 1% 4% 21% 1% 1% TABLE 1-2 3. According to Table 1-2. W ording to Table 1-2, what happens to the percentage of nitrogen and oxygen in the atmosphere as the percentage of water vapor increases...
1. In a room full of air, the air is mainly composed of Nitrogen and Oxygen molecules (both at room temperature). Find (to two significant figures) the values of Vrms for both molecules. (Eq. (20.26) relates Vrms to absolute temperature.) W A (97°07) = suda SW 1°xɛ Si on n oin onando CITI A ini 20 SUOISSAdy som innba
An apartment has a living room whose dimensions are 3.0 m x 5.5
m x 6.3 m. Assume that the air in the room is composed of 79%
nitrogen (N2) and 21% oxygen (O2). At a
temperature of 22 °C and a pressure of 1.01 x 105 Pa,
what is the mass (in grams) of the air?
Unit Num ЬеґТо"097524e3
MODEL 3: PARTIAL PRESSURE Dry air is 78% nitrogen, 21% oxygen, and 1% argon. A percentage is a ratio: "78%" means that out of 100 particles 78 will be nitrogen, or 0.78 as a fraction. Such fractions are unitless. CRITICAL THINKING QUESTIONS 15. Approximately what is the pressure in the room where you are working? (Include the units.) 16. What three gases are causing this total pressure? 17. What fraction (not percent) of air molecules are nitrogen molecules? Oxygen molecules?...
door. Room A, however, is Wa Which room contains the greater mass of air? Xp Problem 1.12. Calculate the average volume per molecule for an ideal gas at take the cube root to get an estimate of the average distance between molecules. How does this distance room temperature and atmospheric pressure. Then compare to the size of a small molecule like N2 or H20? tely the number of protons in a gram of
I need your help please with these two questions. My
Thermodynamics exam is tomorrow, like and comment are rewarded for
good explanation of the answers
(c) The molar mass of oxygen atoms is 16.0g mol-1. The oxygen molecule O2 can be considered as two massive points (representing the oxygen atoms) separated by a distance of 1.21 x 10-10 m. The origin of the Cartesian coordinate system is placed in the molccular centre of mass and the a-axis is aligned along...
Permanent & Variable Atmospheric Gases Percent of Atmosphere (0% H,O) 78% 21% 1% Percent of Atmosphere (1% H,O) 77% Percent of Atmosphere 12% H,O) 76% 21% 1% 2% Percent of Atmosphere (3% H,O) 76% 20% 1% 3% Percent of Atmosphere (4% H,0) 75% 20% 1% 4% 21% 1% 1% TABLE 1-2 3. According to Table 1-2. W ording to Table 1-2, what happens to the percentage of nitrogen and oxygen in the atmosphere as the percentage of water vapor increases...
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