Concept explainers
(a)
Interpretation:
The value of
Concept Introduction:
Root mean square speed is square root of average value of square of molecular speeds of gas molecules. It includes molecular weight and temperature, both of which affect kinetic energy of gas. It is denoted by
Here,
(a)
Answer to Problem 3D.9E
Value of
Explanation of Solution
Conversion factor to convert
Substitute
Hence
(b)
Interpretation:
The value of
Concept Introduction:
Refer to part (a).
(b)
Answer to Problem 3D.9E
Value of
Explanation of Solution
Conversion factor to convert
Substitute
Hence
(c)
Interpretation:
The value of
Concept Introduction:
Refer to part (a).
(c)
Answer to Problem 3D.9E
Value of
Explanation of Solution
Conversion factor to convert
Substitute
Hence
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Chapter 3 Solutions
Chemical Principles: The Quest for Insight
- Given that a sample of air is made up of nitrogen, oxygen, and argon in the mole fractions 0.78 N2, 0.21 O2, and 0.010 Ar, what is the density of air at standard temperature and pressure?arrow_forwardA sample of 3.73 mol of argon is confined at low pressure in a volume at a temperature of 61 C. Describe quantitatively the effects of each of the following changes on the pressure, the average kinetic energy per molecule in the gas, and the root-mean-square speed. (a) The temperature is increased to 177 °C. (b) The volume is tripled. (c) The amount of argon is decreased to 1.96 mol. Give each answer as a decimal factor of the form: new value = factor old value. A factor of 1 means no change. Change KEavg Urms (а) (b) (c)arrow_forward5. The diameter d for an O2 molecule is 0.36 nm. The molar mass is 32.0 g mol-1. (a) calculate the root mean squared speed of an 02 molecule at 298 K. (b) if the pressure is 1.0 bar inside a balloon containing oxygen gas, calculate the number of collisions per second experienced by an oxygen molecule at 298K. (c) calculate the mean free path of the 02 molecule at 298 K and 1 atm.arrow_forward
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