Find the amount of water containing 14.02 * 10²⁴ molecules

14.02 x 10²⁴ molecules

Explanation:

To solve this problem we will use Avogadro's number: It relates to the number of molecules (or atoms) contained in 1 mol of any given substance:

Thus, 23.28 moles of water contain 14.02 x 10²⁴ molecules.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.