Question

Carbon tetrachloride (CCl4) is a liquid.
Assuming that CCl4 has a density of
1.595 g/mL what is the molarity of pure
CCl4?

Answer 1

density = 1.595 g/mL which means 1,000 mL has a mass of 1595 grams.
mols CCl4 in this 1 L of solution is mols = grams/molar mass = 1595 g/154 = 10.4 mols/L = 10.4 M.
That 154 is 4*35.5 + 12 = 154 but those numbers are rounded to three places. You can get a little more accurate answer by recalculating the 154 number and substituting into the equation above to get an answer to four significant figures if you wish.