Molar Mass and Chemical Composition

The video tutorial explains how to calculate the molar mass of gold(III) chloride (AuCl3). It begins by identifying the molar mass of gold and chlorine from the periodic table. The instructor then multiplies the molar mass of chlorine by three, as there are three chlorine atoms in the compound. The total molar mass is calculated by adding the values for gold and chlorine. The video concludes with a discussion on rounding and interpreting the final result, emphasizing that the molar mass of AuCl3 is 303.32 grams per mole.

What is the atomic mass of gold (Au) as mentioned in the video?

• 303.32 grams per mole

• 196.97 grams per mole

• 1.008 grams per mole

• 35.45 grams per mole

How many chlorine (Cl) atoms are present in AuCl3?

• Four

• Three

• Two

• One

What is the atomic mass of chlorine (Cl) used in the calculation?

• 1.008 grams per mole

• 303.32 grams per mole

• 35.45 grams per mole

• 196.97 grams per mole

What is the total molar mass of AuCl3 as calculated in the video?

• 196.97 grams per mole

• 35.45 grams per mole

• 303.32 grams per mole

• 1.008 grams per mole

If you have 303.32 grams of AuCl3, how many moles do you have?

• Four moles

• Three moles

• Two moles

• One mole

What does the molar mass of 303.32 grams per mole indicate about AuCl3?

• It is the mass of one molecule of AuCl3.

• It is the mass of one mole of AuCl3.

• It is the mass of one gram of AuCl3.

• It is the mass of one atom of AuCl3.