A 0.10- gas tank holds 5.0 moles of nitrogen gas (N2), at a ...

[j.rubin]

A 0.10- gas tank holds 5.0 moles of nitrogen gas (N2), at a temperature of The atomic mass of nitrogen is 14 g/mol, the molecular radius is 3.0  10-10 m, and the Boltzmann constant is 1.38  10-23 J/K.
 
  The root-mean-square speed (thermal speed) of the molecules is closest to
  A) 570 m/s.
  B) 810 m/s.
  C) 410 m/s.
  D) 22 m/s.
  E) 99 m/s.

Question 2

The root-mean-square speed (thermal speed) of a certain sample of carbon dioxide molecules, with a molecular weight of 44 g/mol, is 396 m/s.
 
  What is the root-mean-square speed (thermal speed) of water vapor molecules, with a molecular weight of 18 g/mol, at the same temperature?
  A) 253 m/s
  B) 396 m/s
  C) 421 m/s
  D) 506 m/s
  E) 619 m/s

[princessflame2016]

Answer to Question 1

Answer: A

Answer to Question 2

Answer: E

[j.rubin]

Excellent

[meow1234]

Gracias!