Molar Mass and Glycerol Calculations

The video tutorial explains how to find the molar mass of glycerol, also known as glycerin, using its molecular formula C3H8O3. The process involves using the periodic table to find the atomic masses of carbon, hydrogen, and oxygen, and then calculating the total molar mass by multiplying and adding these values. The final molar mass of glycerol is determined to be 92.11 grams per mole. The tutorial emphasizes the importance of rounding based on the periodic table used.

What is the molecular formula for glycerol?

• C2H6O2

• C3H8O3

• C3H6O3

• C4H10O4

What is the atomic mass of carbon as per the periodic table?

• 12.01 grams per mole

• 14.01 grams per mole

• 1.01 grams per mole

• 16.00 grams per mole

How many hydrogen atoms are present in glycerol?

• 10

• 12

• 8

• 6

What is the atomic mass of oxygen used in the calculation?

• 18.00 grams per mole

• 17.00 grams per mole

• 16.00 grams per mole

• 15.99 grams per mole

How do you calculate the molar mass of glycerol?

• Multiply the atomic mass of each element by the number of atoms and then add

• Add the atomic masses of all elements

• Multiply the atomic masses of all elements

• Divide the atomic mass of each element by the number of atoms and then add

What is the molar mass of glycerol?

• 92.11 grams per mole

• 91.11 grams per mole

• 90.11 grams per mole

• 93.11 grams per mole

If your periodic table rounds to a different decimal place, what might happen?

• You will get the same molar mass

• You might get a slightly different molar mass

• The molar mass will be exactly double

• The molar mass will be exactly half