An ideal monatomic gas cools from 455.0 K to 405.0 K at constant ...

[leo leo]

An ideal monatomic gas cools from 455.0 K to 405.0 K at constant volume as 831 J of energy is removed from it. How many moles of gas are in the sample? The ideal gas constant is R = 8.314 J/mol  K.
 
  A) 1.33 mol B) 0.725 mol C) 2.15 mol D) 2.50 mol E) 1.50 mol

Question 2

A resistor is made out of a long wire having a length L. Each end of the wire is attached to a terminal of a battery providing a constant voltage V0. A current I flows through the wire.
 
  If the wire were cut in half, making two wires of length L/2, and both wires were attached to the battery (the end of both wires attached to one terminal, and the other ends attached to the other terminal), what would be the total current flowing through the two wires? A) 4I
  B) 2I
  C) I
  D) I/2
  E) I/4

[yuyiding]

Answer to Question 1

A

Answer to Question 2

A

[leo leo]

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[yuyiding]

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