Question

1.68 moles of `NaCl` (table salt) contains how many molecules?

Answer 1

`1.01xx10^(24) " molecules"`.

Explanation:

To calculate the number of molecules in a given number of mole, we can simply multiply by Avogadro's number which is equal to `6.022xx10^(23)`.

Therefore,

`? "molecules"=1.68 cancel(mol)xx(6.022xx10^(23)"molecules")/(1cancel(mol))= 1.01xx10^(24) " molecules"`.

I hope you find this helpful.