Molar Mass of Chlorine and Cl2

The video tutorial explains how to find the molar mass of chlorine gas (Cl2). It begins by identifying the molecular weight of chlorine from the periodic table, which is 35.45 grams per mole. Since Cl2 consists of two chlorine atoms, the molecular weight is multiplied by 2, resulting in a molar mass of 70.90 grams per mole. The tutorial emphasizes the importance of including the decimal point in the final result. The video concludes with a brief thank you from Dr. B.

What is the molar mass of a single chlorine atom as found on the periodic table?

• 17.77 grams per mole

• 35.45 grams per mole

• 44.01 grams per mole

• 70.90 grams per mole

How do you calculate the molar mass of Cl2 from the molar mass of a single chlorine atom?

• Divide the molar mass of one chlorine atom by 2

• Subtract the molar mass of one chlorine atom from 70.90

• Add the molar mass of two chlorine atoms

• Multiply the molar mass of one chlorine atom by 2

What is the final molar mass of Cl2 after calculation?

• 17.77 grams per mole

• 44.01 grams per mole

• 35.45 grams per mole

• 70.90 grams per mole

Why is it important to include the decimal point in the molar mass of Cl2?

• It makes the number look more scientific

• It helps in balancing chemical equations

• It indicates the precision of the measurement

• It is required by the periodic table

Who is the presenter of the video tutorial?

• Dr. B

• Dr. A

• Dr. C

• Dr. D