How many molecules are contained in 25.0 mL of butane? The ...

[bucstennis@aim.com]

How many molecules are contained in 25.0 mL of butane? The density of butane is 0.6011 g/mL and the molar mass is 58.12 g/mol.
 
  A) 2.59  1023 molecules butane
  B) 1.46  1027 molecules butane
  C) 6.87  1023 molecules butane
  D) 1.56  1023 molecules butane
  E) 7.14  1025 molecules butane

Question 2

Crude oil is an example of
 
  A) a compound.
  B) an element.
  C) a heterogeneous mixture.
  D) a homogeneous mixture.

[scikid]

Answer to Question 1

D

Answer to Question 2

C

[bucstennis@aim.com]

YES! Correct, THANKS for helping me on my review

[Dinolord]

Thanks for the timely response, appreciate it