How many d electrons are in the cobalt ion of K3Co(CN)6? A) 3 ...

[geoffrey]

How many d electrons are in the cobalt ion of K3Co(CN)6?
 
  A) 3
  B) 5
  C) 6
  D) 7
  E) 4

Question 2

A solution contains 30 ppm of benzene. The density of the solution is 1.00 g/mL. This means that ________.
 
  A) there are 30 mg of benzene in 1.0 L of this solution
  B) 100 g of the solution contains 30 g of benzene
  C) 100 g of the solution contains 30 mg of benzene
  D) the solution is 30 by mass of benzene
  E) the molarity of the solution is 30 M

[taylorsonier]

Answer to Question 1

C

Answer to Question 2

A

[geoffrey]

TY

[taylorsonier]

You're welcome