Question

how many molecules are in 47.3 moles of co₂? answer: molecules

Explanation:

Step1: Recall Avogadro's number

Avogadro's number $N_A = 6.022\times 10^{23}$ molecules/mol.

Step2: Calculate number of molecules

The number of molecules $N$ is given by $N = n\times N_A$, where $n = 47.3$ mol. So $N=47.3\times6.022\times 10^{23}$.
$N = 47.3\times6.022\times 10^{23}=2.848406\times 10^{25}$ molecules.

Answer:

$2.848406\times 10^{25}$