How many molecules of NaCl are in 58.5 g NaCl?

6.023*10 ²³ molecules

Explanation:

Moles is denoted by given mass divided by the molecular mass,

Hence,

n = w / m

n = moles,

w = given mass,

m = molecular mass.

From the question,

given mass of NaCl = w = 58.5 g

As we know the molecular mass of NaCl = m = 58.5 g/mol

Moles can be calculted from the above formula -

n = w / m = 58.5 g / 58.5 g/mol = 1 mol

Since, 1 mol has 6.023*10 ²³ particles,

Therefore,

1 mol of NaCl = 6.023*10 ²³ molecules