Zinc and Chlorine Molar Mass Calculations

The video tutorial explains how to calculate the molar mass of zinc chloride (ZnCl2). It begins by identifying the molar mass of zinc from the periodic table, which is 65.38 grams per mole. Then, it finds the molar mass of chlorine, which is 35.45 grams per mole, and multiplies it by two because there are two chlorine atoms in ZnCl2. Finally, the tutorial adds these values to get the total molar mass of ZnCl2, which is 136.29 grams per mole.

What is the atomic mass of zinc as found on the periodic table?

• 65.38 grams per mole

• 35.45 grams per mole

• 70.90 grams per mole

• 12.01 grams per mole

How many chlorine atoms are present in zinc chloride (ZnCl2)?

• Two

• Four

• Three

• One

What is the atomic mass of chlorine used in the calculation?

• 1.01 grams per mole

• 12.01 grams per mole

• 35.45 grams per mole

• 65.38 grams per mole

What is the total molar mass of zinc chloride (ZnCl2)?

• 70.90 grams per mole

• 136.29 grams per mole

• 200.00 grams per mole

• 100.00 grams per mole

Which of the following steps is necessary to calculate the molar mass of ZnCl2?

• Subtract the mass of zinc from chlorine

• Multiply the mass of chlorine by two

• Divide the mass of zinc by two

• Add the mass of zinc and hydrogen