Chapter 20: Q.30 (page 567)
What is the thermal energy of aluminum at ?
Short Answer
The thermal energy of aluminum at is
Chapter 20: Q.30 (page 567)
What is the thermal energy of aluminum at ?
The thermal energy of aluminum at is
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Get started for freeUranium has two naturally occurring isotopes. has a natural abundance of and has an abundance of . It is the rarer that is needed for nuclear reactors. The isotopes are separated by forming uranium hexafluoride, role="math" , which is a gas, then allowing it to diffuse through a series of porous membranes. has a slightly larger rms speed than and diffuses slightly faster. Many repetitions of this procedure gradually separate the two isotopes. What is the ratio of the rms speed of to that of
a. Find an expression for theof gas molecules in terms of,and the total mass of the gas .
b. A gas cylinder has a piston at one end that is moving outward at speed during an isobaric expansion of the gas. Find an expression for the rate at which is changing in terms of , the instantaneous value of , and the instantaneous value of the length of the cylinder.
c. A cylindrical sample chamber has a piston moving outward at during an isobaric expansion. The rms speed of the gas molecules is localid="1648640672000" at the instant the chamber length is localid="1648640676590" . At what rate is localid="1648640708264" changing?
An experiment you're designing needs a gas with . You recall from your physics class that no individual gas has this value, but it occurs to you that you could produce a gas with by mixing together a monatomic gas and a diatomic gas. What fraction of the molecules need to be monatomic?
During a physics experiment, helium gas is cooled to a temperature of at a pressure of What are (a) the mean free path in the gas, (b) the rms speed of the atoms, and (c) the average energy per atom?
A box contains helium at a pressure of and a temperature of . It is placed in thermal contact with abox containing argon at a pressure ofand a temperature of .
a. What is the initial thermal energy of each gas?
b. What is the final thermal energy of each gas?
c. How much heat energy is transferred, and in which direction?
d. What is the final temperature?
e. What is the final pressure in each box?
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