select the correct answer. rachel has a sample containing 2 moles of carbon. how many atoms of carbon are in…

select the correct answer. rachel has a sample containing 2 moles of carbon. how many atoms of carbon are in this sample?\na. 2.044×10²³ atoms\nb. 6.022×20²³ atoms\nc. 1.204×10²⁴ atoms\nd. 6.022×10⁴⁶ atoms

select the correct answer. rachel has a sample containing 2 moles of carbon. how many atoms of carbon are in this sample?\na. 2.044×10²³ atoms\nb. 6.022×20²³ atoms\nc. 1.204×10²⁴ atoms\nd. 6.022×10⁴⁶ atoms

Answer

Explanation:

Step1: Recall Avogadro's number

1 mole of any substance contains $6.022\times 10^{23}$ atoms.

Step2: Calculate number of carbon atoms

If 1 mole of carbon has $6.022\times 10^{23}$ atoms, then 2 moles of carbon has $2\times(6.022\times 10^{23})$ atoms. $2\times(6.022\times 10^{23})=(2\times6.022)\times 10^{23}=12.044\times 10^{23}=1.2044\times 10^{24}$ atoms.

Answer:

C. $1.204\times 10^{24}$ atoms