Chemistry Inspiration: Calculating Number of Moles

How many moles of Cl are there in 385 grams of CCl4?

Given data: atomic mass of Cl = 35.5 amu, molar mass of CCl4 = 154 amu, mass of CCl4 = 385 g

Answer:

There are 2.5 moles of Cl present in 385 grams of CCl4.

When solving for the number of moles of Cl in 385 grams of CCl4, we first calculate the molar mass of CCl4. The molecular formula of CCl4 includes one carbon atom (C) with an atomic mass of 12 and four chlorine atoms (Cl) with an atomic mass of 35.5 each.

Molar mass of CCl4 = (12) + 4(35.5) = 12 + 142 = 154 amu

Using the given mass of CCl4 (385 g), we can convert this mass to moles based on the molar mass:

Number of moles present = 385 g / 154 g/mol = 2.5 moles

Therefore, there are 2.5 moles of Cl present in 385 grams of CCl4.