Question

What is the empirical formula for a compound composed of 0.1502 mol of carbon (C), 0.0751 mol of hydrogen (H), and

0.0376 mol of nitrogen (N)?

Answer 1

C4H2N

Step-by-step explanation:

The empirical formula is the ratio of atoms in the compound. By dividing each number of moles by the smallest number of moles, we can find the ratio of each atom in relation to that smallest value.

Smallest number of moles is N, so

C: 0.1502/0.0376=4.16=4

H: 0.0751/0.0376=2.08=2

N: 0.0376/0.0376=1

Recall that we have to have integers in the empirical formula, so the ratios are rounded to the nearest whole number. With these ratios, we make the formula:

C4H2N