A mixture of 1.0 mol He and 1.0 mol Ne are at STP in a rigid ...

[futuristic]

A mixture of 1.0 mol He and 1.0 mol Ne are at STP in a rigid container. Which of the following statements is true?
 
  A) Both gases have the same average kinetic energy.
  B) Both gases contribute equally to the density of the mixture under these conditions.
  C) Both gases have the same molecular speed.
  D) The mixture has a volume of 22.4 L.
  E) All of the above are true.

Question 2

What mass, in kg, does 5.84 moles of titanium (Ti) have?
 
  A) 0.352 kg
  B) 0.122 kg
  C) 0.820 kg
  D) 0.280 kg
  E) 0.632 kg

[tuwy]

Answer to Question 1

A

Answer to Question 2

D