The pressure of a sample of CH4 gas (6.022 g) in a 30.0 L vessel ...

[RYAN BANYAN]

The pressure of a sample of CH4 gas (6.022 g) in a 30.0 L vessel at 402 K is ________ atm.
 
  A) 2.42
  B) 6.62
  C) 0.413
  D) 12.4
  E) 22.4

Question 2

What is the oxidation number of phosphorous in the PH3 molecule?
 
  A) -3
  B) -4
  C) -5
  D) +1
  E) 0

Question 3

If a metal forms more than one oxide, the acidic character of the oxide increases as the oxidation state of the metal ________.
 
  Fill in the blank(s) with correct word

[lolol]

Answer to Question 1

C

Answer to Question 2

A

Answer to Question 3

increases

[RYAN BANYAN]

Excellent

[daiying98]

Gracias!