There are two important isotopes of uranium− 235 U and 238 U ; these isotopes are nearly identical chemically but have different atomic masses. Only 235 U is very useful in nuclear reactors. One of the techniques for separating them (gas diffusion) is based on the different average velocities v r m s of uranium hexafluoride gas. UF 6 . (a) The molecular masses for 235 U UF 6 and 238 U UF 6 are 349 .0 g / mol and 352 .0 g / mol , respectively. What is the ratio of their average velocities? (b) At what temperature would their average velocities differ by 1 .00 m / s ? (c) Do your answers in this problem imply that this technique may be difficult?
There are two important isotopes of uranium− 235 U and 238 U ; these isotopes are nearly identical chemically but have different atomic masses. Only 235 U is very useful in nuclear reactors. One of the techniques for separating them (gas diffusion) is based on the different average velocities v r m s of uranium hexafluoride gas. UF 6 . (a) The molecular masses for 235 U UF 6 and 238 U UF 6 are 349 .0 g / mol and 352 .0 g / mol , respectively. What is the ratio of their average velocities? (b) At what temperature would their average velocities differ by 1 .00 m / s ? (c) Do your answers in this problem imply that this technique may be difficult?
There are two important isotopes of uranium−
235
U
and
238
U
; these isotopes are nearly identical chemically but have different atomic masses. Only
235
U
is very useful in nuclear reactors. One of the techniques for separating them (gas diffusion) is based on the different average velocities vrms of uranium hexafluoride gas.
UF
6
. (a) The molecular masses for
235
U UF
6
and
238
U UF
6
are
349
.0
g
/
mol
and
352
.0
g
/
mol
, respectively. What is the ratio of their average velocities? (b) At what temperature would their average velocities differ by
1
.00
m
/
s
? (c) Do your answers in this problem imply that this technique may be difficult?
In a gas that is a mixture of water (two H and one O) and carbon dioxide (one C and two O), if the water has average velocity of 347 m/s, what is the average velocity of the carbon dioxide molecule? Give your answer as number in units of m/s without entering the units.
There are two important isotopes of uranium- 235 U and 238 U; these isotopes are
nearly identical chemically but have different atomic masses. Only 235 U is very
useful in nuclear reactors. One of the techniques for separating them (gas
diffusion) is based on the different average velocities Vrms of uranium
hexafluoride gas. UF6. (a) The molecular masses for 235 U UF6 and 238 U UF6 are
349.0 g/mol and 352.0 g/mol, respectively. What is the ratio of their average
velocities?
A sealed cubical container contains helium gas at a temperature of 22.5°C. What is the average velocity of one of these helium atoms? A helium atom has a mass of 6.64x10-27 kg
kB = 1.38 x 10-23 J/K
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