Question

a sample of C3H8O that contains 200 molecules contain how many atoms?

Answer 1

One (1) molecule of C3H8O contains 3 atoms of C, 8 atoms of H and 1 atom of O for a total of 12 atoms. So 200 molecules would contain xxx atoms.

Answer 2

2400 atoms

O-200 atoms

C-600 atoms

H-1600 atoms