Calculating Mass of SO2 Molecules

The video tutorial explains how to find the mass of a single molecule of sulfur dioxide (SO2). It begins by calculating the molar mass of SO2, which is 64.07 grams per mole. The tutorial then demonstrates how to use Avogadro's number to convert this molar mass into the mass of a single molecule. By dividing the molar mass by Avogadro's number, the mass of one SO2 molecule is found to be 10.64 x 10^-23 grams. The video concludes with a brief explanation of the small size of molecules and a thank you from Dr. B.

What is the first step in finding the mass of a single molecule of SO2?

• Measure the temperature of SO2.

• Calculate the density of SO2.

• Find the molar mass of SO2.

• Determine the volume of SO2.

What is the molar mass of SO2 in grams per mole?

• 32.07 g/mol

• 64.07 g/mol

• 128.14 g/mol

• 16.03 g/mol

Why is the molar mass important in calculating the mass of a single molecule?

• It provides the temperature of the molecule.

• It is used to convert moles to grams.

• It helps in determining the volume of the molecule.

• It measures the density of the molecule.

What is Avogadro's number used for in this calculation?

• To determine the number of particles in a mole.

• To convert grams to moles.

• To find the volume of a gas.

• To measure the temperature of a substance.

How do the units cancel out when using the conversion factor?

• By adding moles and grams.

• By having moles on both the top and bottom.

• By dividing moles by grams.

• By multiplying grams with grams.

What is the final mass of one molecule of SO2 in grams?

• 1.66 x 10^-24 grams

• 64.07 grams

• 10.64 x 10^-23 grams

• 6.02 x 10^23 grams

Why is the mass of a single molecule of SO2 such a small number?

• Because molecules are large.

• Because the molar mass is large.

• Because Avogadro's number is small.

• Because molecules are small.

What is the significance of the final calculation in the video?

• It provides the mass of a single SO2 molecule.

• It confirms the density of SO2.

• It measures the temperature of SO2.

• It shows the volume of SO2.