Approximately how many moles of chlorine make up 1.79 * 1023 atoms of chlorine? A. 2.97 * 10-1 moles B. 2.97 moles C. 6.02 * 1023 moles D. 17.0 moles

Given the atoms of Chlorine, Cl = 1.79 * 10^{23} atoms Cl

1 mol of any substance has Avagadro number of formual units (atoms, molecules, ions)

6.022 * 10^{23} Cl atoms are present per each mole chlorine.

The conversion factor used to convert atoms to moles of chlorine is,

/frac{1 mol Cl}{6.022*10^{23} Cl atoms }

Calculating the moles of Cl that make up 1.79 * 10^{23} atoms Cl:

1.79 * 10^{23} atoms Cl * / frac{1 mol Cl}{6.022*10^{23} Cl atoms }=0.279 mol Chlorine

Therefore, 0.297 mol Cl make up 1.79 * 10^{23} atoms Cl