Question

select the correct answer. rachel has a sample containing 2 moles of carbon. how many atoms of carbon are in the sample? a. 2.044×10²³ atoms b. 6.022×10²³ atoms c. 1.204×10²⁴ atoms d. 6.022×10⁴⁶ atoms

Explanation:

Step1: Recall Avogadro's number

Avogadro's number $N_A = 6.022\times10^{23}$ atoms/mol.

Step2: Use the mole - atom relationship

The number of atoms $N$ in $n$ moles is given by $N=n\times N_A$. Here $n = 2$ moles. So $N=2\times6.022\times 10^{23}=1.2044\times 10^{24}$ atoms.

Answer:

A. $1.2044\times 10^{24}$ atoms