Question

How many molecules are in a 0.756 mole sample of sodium chloride (NaCl)?

Answer 1

No of molecules=no of moles×Avagadro no

`\\ \rm\longmapsto 0.756* 6.023*10^(23)`

`\\ \rm\longmapsto 4.552* 10^(23)`

`\\ \rm\longmapsto 0.4* 10^(24)molecules`