Atoms of the same element that have different masses are called ...

[fbq8i]

Atoms of the same element that have different masses are called
 
  A) allotropes.
  B) anions.
  C) isotopes.
  D) molecules.

Question 2

Which is the correct statement about one mole of ammonia, NH3?
 
  A) It contains 14 g nitrogen and 3 g hydrogen.
  B) It contains 6.02  1023 molecules.
  C) It contains 1.8  1024 atoms of hydrogen.
  D) all of the above

[anyusername12131]

Answer to Question 1

C

Answer to Question 2

D

[fbq8i]

YES! Correct, THANKS for helping me on my review

[lkanara2]

Thanks for the timely response, appreciate it