Calculate the mass, in g, of 1.9 1024 atoms of Pb. A) 3.9 ...

[bcretired]

Calculate the mass, in g, of 1.9  1024 atoms of Pb.
 
  A) 3.9  102 g
  B) 2.4  102 g
  C) 3.2  102 g
  D) 1.5  102 g
  E) 6.5  102 g

Question 2

A 0.334 g sample of an unknown halogen occupies 109 mL at 398 K and 1.41 atm. What is the identity of the halogen?
 
  A) Br2
  B) F2
  C) Cl2
  D) I2
  E) Ge

[Edwyer]

Answer to Question 1

E

Answer to Question 2

C

[bcretired]

Thank you!

[Edwyer]

Always glad to help...