Find the mass in grams of 2.00 x 10^23 molecules of C10H15O

119.13 g C10H15O

Explanation:

First you have to convert the molecules to moles-

2.00×10^23 molecules ( 1 mole/ 6.02×10^23 molecules)

Then convert the moles to grams (you will need a periodic table)

Looking at the periodic table, we see that C=12, H=1, and O=16

so if we add 15 O's, 10 C's and 1 H, we get 361 g.

0.33 moles ( 361 g/1 mole )= 119.13 g