# Question #e293b

Nov 9, 2014

We know from the molecular mass that
1 mole of C$C {l}_{4}$ = 154 g/ mol , and we can use this information to make a conversion factor. In this case, first we are converting from grams to moles and then from moles to number of molecules.

1 mol of C$C l 4$ has mass 154 g/mol

154 g of C$C l 4$ makes 1 mol of C$C {l}_{4}$

1g of C$C {l}_{4}$ makes $\left(1 / 154\right)$ moles

10.92 g of C$C {l}_{4}$ makes 10.92 $\left(1 / 154\right)$ moles

10.92 g of C$C {l}_{4}$ makes 0.0709 moles

1 mole of C$C {l}_{4}$ has 6.02 x ${10}^{23}$ molecules

0.0709 moles of C$C {l}_{4}$ has ( 6.02 x ${10}^{23}$ ) x 0.0709 molecules

0.0709 moles of C$C {l}_{4}$ has molecules 0.426 x ${10}^{23}$ molecules.