Answer to Question #148287 in General Chemistry for Matt

Question

How many water molecules are in a bottle of water that contains 500. mL? The density of water is 1.0 g/mL .

Answer 1

Molar mass of water is 18g.

The bottle has 500 mL of water i.e. 500g of water.

Therefore, no. of moles = 500/18

= 27.78

No. of molecules = 27.78* 6.022*10²³

= 1.673 * 10²⁵