Molar Mass of Compounds

The video tutorial explains how to calculate the molar mass of nitrogen dioxide (NO2). It begins by identifying the atomic masses of nitrogen and oxygen from the periodic table. The tutorial then demonstrates how to multiply the atomic mass of oxygen by two, as there are two oxygen atoms in NO2, and add it to the atomic mass of nitrogen. The result is a molar mass of 46.01 grams per mole. The video concludes by explaining the significance of this calculation, noting that one mole of NO2 weighs 46.01 grams.

What is the first step in finding the molar mass of a compound like NO2?

• Look up atomic masses on the periodic table

• Calculate the density of the compound

• Determine the number of moles

• Measure the volume of the compound

How many oxygen atoms are considered when calculating the molar mass of NO2?

• Four

• Three

• One

• Two

What is the molar mass of NO2 as calculated in the video?

• 30.01 grams per mole

• 50.01 grams per mole

• 46.01 grams per mole

• 60.01 grams per mole

If you have 46.01 grams of NO2, how many moles do you have?

• 0.5 moles

• 1 mole

• 2 moles

• 3 moles

What does the molar mass of a compound tell us?

• The temperature of the compound

• The mass of one mole of the compound

• The density of the compound

• The volume of the compound