An analysis showed a sample to contain 0.00471 grams of lead. How ...

[clmills979]

An analysis showed a sample to contain 0.00471 grams of lead. How many micrograms is this?
 
  A) 0.471 g
  B) 4.71  103 g
  C) 4.71  106 g
  D) 4.71  10-2 g
  E) 4.71  10-6 g

Question 2

What is the molarity of a solution prepared by dissolving 3.50 mol NaCl in enough water to make 1.50 L of solution?
 
  A) 0.429 M
  B) 2.33 M
  C) 5.25 M
  D) 87.8 M
  E) 137 M

[sultana.d]

Answer to Question 1

B

Answer to Question 2

B

[clmills979]

Thanks for the timely response, appreciate it

[kjohnson]

Wow, this really help