Question

(a) Calculate the number of doughnuts in 4 dozen
doughnuts.
(b) Use the same logic used in (a) to calculate the number
of molecules in 4.0 mol of carbon dioxide.

Answer 1

a dozen is equal to \(12\)

a substance has got \( 6.02 \times 10^{23} \) molecules per one mole

just like you would multiply a dozen by \(4\), multiply \(4\) mol of \( CO_2\) by \( 6.02 \times 10^{23} \)