Thank you for the opportunity to help you with your question!

If the molar mass of CCl4 is 153.8 g/mol then you must multiply this by the amount of moles of CCl4 that one has to find the mass which is in grams.6.02

To do this you must divide the amount of molecules by Avogadro's number (6.022*10^23 molecules/mol).

Can you please provide more clarification in the first part...I don't understand how to go from 153.8 g/mol of CCl4 and then dividing by Avogadro's number in molecules/mol. How are the grams cancelled out?

The grams are not part of the equation at that point. I just needed to convert the amount of molecules of CCl4 into moles. That is so I could multiply by the molar mass and have the moles cancel out just leaving the amount of grams.