Molecular Weight Calculations

The video tutorial explains how to calculate the molecular weight of hydrochloric acid (HCl). It begins by identifying the molecular weights of hydrogen and chlorine from the periodic table, which are 1.01 grams per mole and 35.45 grams per mole, respectively. These values are then added together to determine the total molecular weight of HCl, which is 36.46 grams per mole. The video concludes with a brief sign-off by Dr. B.

What is the molecular weight of hydrogen as found on the periodic table?

• 0.99 grams per mole

• 1.01 grams per mole

• 2.02 grams per mole

• 1.10 grams per mole

What is the molecular weight of chlorine?

• 34.45 grams per mole

• 35.45 grams per mole

• 36.45 grams per mole

• 37.45 grams per mole

How do you calculate the total molecular weight of HCl?

• By adding the weights of hydrogen and chlorine

• By subtracting the weight of hydrogen from chlorine

• By multiplying the weights of hydrogen and chlorine

• By adding the weights of hydrogen and oxygen

What is the total molecular weight of HCl?

• 38.46 grams per mole

• 37.46 grams per mole

• 36.46 grams per mole

• 35.46 grams per mole

What is another term used for molecular weight?

• Molar mass

• Atomic mass

• Molecular density

• Molecular volume