A solution contains 51 ppm of benzene. The density of the ...

[BrownTown3]

A solution contains 51 ppm of benzene. The density of the solution is 1.00 g/mL. This means that ________.
 
  A) there are 51 mg of benzene in 1.0 L of this solution
  B) 100 g of the solution contains 51 g of benzene
  C) 100 g of the solution contains 51 mg of benzene
  D) the solution is 51 by mass of benzene
  E) the molarity of the solution is 51 M

Question 2

Which of the following is an inner transition element?
 
  A) Rf
  B) Ti
  C) Th
  D) all of the above
  E) none of the above

[heinisk01]

Answer to Question 1

A

Answer to Question 2

C

[BrownTown3]

Thanks for the timely response, appreciate it

[robbielu01]

Excellent