Homework Answers
Average speed is inversely proportional to molar mass.
So, the one with lower molar mass will have higher speed
Lets list out molar mass of all given compounds
Molar mass of O2 = 32.0
Molar mass of N2 = 28.02
Increasing order of molar mass is:
N2
O2
Same is the order of decreasing vrms
From fastest to slowest
N2
O2
Answer: Nitrogen
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Review Constants Periodic Table Air consists mostly of nitrogen (N), with a molecular mass of 28, and oxygen (O2), with a molecular mass of 32. A water molecule (H,O) has molecular mass 18. According to the ideal gas law (N/ V P /KT), dry air at a particular pressure and temperature has the same particle density (number of particles per unit volume) as humidait at the same pressure and temperature. Consequently, humidair, whose low-mass water molecules replace more massive nitrogen...
The atmosphere contains 21% oxygen and 78% nitrogen (and 1% of other gases). At standard temperature and pressure (0°C and 1.013 x 10 Pa) calculate the following for both oxygen and nitrogen: (a) The partial pressure (b) The average kinetic energy per module (c) The rms speed of the molecules (d) Assuming an average molecular diameter of 3.5 x 1010 m for both oxygen and nitrogen, T1. estimate the mean free path of molecules in the atmosphere at STP Molar...
3. Most of the atmosphere is made of nitrogen and oxygen. At room temperature, the speed (velocity) of the molecules of N2 and O2 are plotted (horizontal) versus the abundance (amount) of molecules moving at that speed. Identify which gas is represented by which curve (or if both gases would be represented by the same curve), and justify your answer with a brief explanation. (4) venue each element nos Molecular spoed nometer.
IULIJ Review Constants | Periodic Table Part A Air is a mixture of several gases. The 10 most abundant of these gases are listed here along with their mole fractions and molar masses. Molar mass Component Mole fraction (g/mol) Nitrogen 0.78084 28.013 Oxygen 0.20948 31.998 Argon 0.00934 39.948 Carbon dioxide 0.000375 44.0099 Neon 0.00001818 20.183 Helium 0.00000524 4.003 What mass of carbon dioxide is present in 1.00 mº of dry air at a temperature of 15 °C and a pressure...
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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?...
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