Molecular Weight of Calcium Chloride

Dr. B explains how to find the molecular weight of calcium chloride (CaCl2). He starts by ensuring the correct chemical formula is used, balancing the charges of calcium and chlorine. Then, he calculates the molecular weight using the periodic table, adding the atomic weights of calcium and chlorine, and multiplying the chlorine weight by two. The final molecular weight is determined to be 110.98 grams per mole.

What is the first step in determining the molecular weight of calcium chloride?

• Finding the atomic number of chlorine

• Balancing the chemical equation

• Ensuring the correct chemical formula

• Calculating the weight of calcium

Why do we need two chlorine atoms in the formula for calcium chloride?

• To balance the positive charge of calcium

• To increase the molecular weight

• To match the atomic weight of calcium

• To make the compound more stable

What is the atomic weight of calcium used in the calculation?

• 110.98 grams per mole

• 70.90 grams per mole

• 35.45 grams per mole

• 40.08 grams per mole

How many grams per mole is the atomic weight of chlorine?

• 70.90

• 40.08

• 35.45

• 110.98

What is the final molecular weight of calcium chloride?

• 35.45 grams per mole

• 40.08 grams per mole

• 110.98 grams per mole

• 70.90 grams per mole