How many moles are in 75.0 grams of CaCl2?

Answer 1

To find the number of moles in 75.0 grams of CaCl2, we first need to determine the molar mass of CaCl2.

The molar mass of CaCl2 can be calculated as follows:
Ca = 40.08 g/mol
Cl = 35.45 g/mol (x2 since there are two Cl atoms in one CaCl2 molecule)

Molar Mass of CaCl2 = 40.08 + 35.45 x 2 = 110.98 g/mol

Now, we can calculate the number of moles in 75.0 grams of CaCl2:
Number of moles = Mass / Molar Mass
Number of moles = 75.0 g / 110.98 g/mol
Number of moles ≈ 0.675 moles

Therefore, there are approximately 0.675 moles in 75.0 grams of CaCl2.