1. How many moles are in 3.01 x 10^23 molecules of Boron trichloride

There are 0.499 moles present in molecules of Boron trichloride.

Explanation:

According to mole concept, there are molecules present in 1 mole of a substance.

Hence, number of moles present in molecules are as follows.

Thus, we can conclude that there are 0.499 moles present in molecules of Boron trichloride.