Question

DIG DEEPER! Of all the atoms in caffeine, 1/2

are oxygen atoms, 1/6

are nitrogen atoms, and 1/3

are carbon atoms. The rest of the atoms are hydrogen. What fraction of the atoms in caffeine are oxygen, nitrogen, or hydrogen?

fraction:

Answer 1

2/3

Explanation:

First find what fraction of caffeine is hydrogen, 1 - 3/6 - 2/6 - 1/6 = H meaning hydrogen = 0/6 or 0.

Next add O + N + H which is 3/6 + 1/6 + 0/6 which is 2/3.