Question

Your research director informs you that the molecules of a sample of gas at 397 K397 K have a root‑mean‑square (rms) speed of 297 m/s297 m/s and asks you to calculate the most probable speed and the average speed. Also, while you're at it and before lunch, you should calculate the mass of a molecule.

most probable speed:

m/s

average speed:

m/s

molecular mass:

kg

Answer #1

The average kinetic energy of the molecules in a gas
sample depends only on the temperature, T. However, given the same
kinetic energies, a lighter molecule will move faster than a
heavier molecule, as shown in the equation for rms speed rms
speed=√3RTM where R=8.314 J/(mol⋅K) and M is molar mass in
kilograms per mole. Note that a joule is the same as a
kilogram‑meter squared per second squared (kg·m2/s2). What is the
rms speed of Cl2 molecules at 471...

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1. The average kinetic energy of the molecules in a gas sample
depends only on the temperature, T. But given the same kinetic
energies, a lighter molecule will move faster than a heavier
molecule.
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B. What is the rms speed of He atoms at 505 K?
2. Use the van der Waals equation of state to calculate the
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Compute the root-mean-square speed of He
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Compute the root-mean-square speed of
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nitrogen gas at a temperature of
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Arrange the following molecules in order of increasing average
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Enter formulas in the boxes below: 1 = slowest, 4
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Express your answer in terms of the variables p,
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vrms
v r m s
=
nothing
Request Answer
Part B
A gas cylinder has a piston at one end that is moving outward at
speed vpiston during an isobaric expansion of the gas.
Find an expression for the rate at which vrms is
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Express your answer in terms of the variables...

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and mB = 6.12 × 10?26 kg.
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per molecule?
(b) (1 point) Which gas has greater rms speed?
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Please show work and give detailed
explanation
Part 1: Determine the molar mass of Freon-11 gas if a sample
weighing 0.597 g occupies 100.0 cm3 at 95°C and 1000.0 mm Hg
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g/mol
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At what temperature will it have a pressure of 450 torr if the
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A. 8.33 °C...

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