Question

Question #b1bdd

Answer 1

`4.5165 xx 10^23`

Explanation:

One mole of any substance contains a number of molecules equal to the Avogadro Constant, which is `6.022×10^23`.
So, in 0.75 moles, there will be `0.75xx(6.022×10^23) = 4.5165 xx 10^23` molecules

Hope this helps; let me know if I can do anything else:)