A sample of 3 mol of diatomic gas is measured to have a temperature of 300
K. If the mass of the gas is 0.048 kg, what is the approximate average speed
of the molecules in the gas? (Recall that the equation for kinetic energy due
to translation in a gas is KETranslational = mvnRT, and R= 8.31 J/(mol-
2
K))
A 684 m/s
B. 608 m's
C 612 m/s
D. 670 m/s
Answers: 3
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Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)
Answers: 2
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Ms.hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.
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The precision of a laboratory instrument is ± 0.05 g. the accepted value for your measurement is 7.92 g. which measurements are in the accepted range? check all that apply. 7.85 g 7.89 g 7.91 g 7.97 g 7.99 g
Answers: 1
A sample of 3 mol of diatomic gas is measured to have a temperature of 300
K. If the mass of the ga...
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