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Author Question: Some texts use the kilogram-mole rather than the gram-mole. What would be the values of the gas ... (Read 133 times)

lb_gilbert

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on: Jul 27, 2018
Some texts use the kilogram-mole rather than the gram-mole. What would be the values of the gas constant R and Avogadro's number NA using the kg-mole?
 
  What will be an ideal response?

Question 2

A bat, flying due east at 2 m/s, emits a shriek that is reflected back to it from an oncoming insect flying directly toward the bat at 4 m/s. The insect is 20 m from the bat at the instant the shriek is emitted. Sound travels 340 m/s in air.
 
  After what elapsed time does the bat hear the reflected echo?


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kardosa007

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Reply #1 on: Jul 27, 2018
Answer to Question 1

R = 8.31  103 J / (kg-mole) K
NA = 6.02  1026 (kg-mole)-1

Answer to Question 2

57 milliseconds


lb_gilbert

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Reply 2 on: Jul 27, 2018
:D TYSM

frankwu0507

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Reply 3 on: Yesterday
Wow, this really help

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