Question

How many molecules are in 0.80 mol of NaCl.

Answer 1

Answer: There are
`4.81* 10^(23)` molecules in 0.80 mol of NaCl.

Step-by-step explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number
`6.023* 10^(23)` of particles.

As 1 mole of
`NaCl` contains =
`6.023* 10^(23)` molecules

0.80 mole of
`NaCl` contains =
`(6.023* 10^(23))/(1)* 0.80=4.81* 10^(23)` molecules

Thus there are
`4.81* 10^(23)` molecules in 0.80 mol of NaCl.