Question

how many atoms are in 6.3 mol zn? 3.8x10^24 atoms zn 410 atoms zn 1.0x10^-25 atoms zn 6.0x10^23 atoms zn

Explanation:

Step1: Recall Avogadro's number

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

Step2: Calculate the number of atoms

The number of atoms $N$ in a given number of moles $n$ is given by $N=n\times N_A$. Here, $n = 6.3\text{ mol}$, so $N=6.3\text{ mol}\times6.022\times 10^{23}\text{ atoms/mol}$.
$N = 6.3\times6.022\times 10^{23}\text{ atoms}\approx3.8\times 10^{24}\text{ atoms}$.

Answer:

A. $3.8\times 10^{24}$ atoms Zn