How many moles of carbon tetrachloride are in 51.0 grams?

Idk = "I don't know." Just helping. This sounds like a science question. You might want to ask your teacher the subject if I am incorrect. :-)

moles= mass/molmassCCl4

To determine the number of moles of carbon tetrachloride in 51.0 grams, you need to use the concept of molar mass.

First, find the molar mass of carbon tetrachloride (CCl4). Carbon has a molar mass of approximately 12.01 g/mol, and chlorine has a molar mass of approximately 35.45 g/mol. Since there are four chlorine atoms in carbon tetrachloride, the molar mass of carbon tetrachloride is:
(1 * 12.01 g/mol) + (4 * 35.45 g/mol) = 153.82 g/mol.

Next, divide the mass of carbon tetrachloride (51.0 g) by its molar mass (153.82 g/mol) to obtain the number of moles.
Number of moles = Mass / Molar mass
Number of moles = 51.0 g / 153.82 g/mol
Number of moles ≈ 0.3316 mol.

Therefore, there are approximately 0.3316 moles of carbon tetrachloride in 51.0 grams.