Atoms with the same atomic number and different mass numbers ...

[FButt]

Atoms with the same atomic number and different mass numbers ________.
 
  A) do not exist
  B) are isomers
  C) are isotopes
  D) are allotropes
  E) are resonance structures

Question 2

How many molecules of N2 are in a 500.0 mL container at 780 mm Hg and 135C?
 
  A) 8.76  1021
  B) 9.23  1021
  C) 2.65  1022
  D) 2.79  1022

[cassie_ragen]

Answer to Question 1

C

Answer to Question 2

B

[FButt]

Thanks

[cassie_ragen]

Welcome