Calculating Molar Mass of C5H12

The video tutorial explains how to calculate the molar mass of C5H12, also known as pentane. It begins by identifying the atomic masses of carbon and hydrogen from the periodic table. The tutorial then demonstrates the calculation process by multiplying the atomic masses by the number of each type of atom in the molecule. The final molar mass is calculated as 72.17 grams per mole. The video concludes with a note on potential variations due to rounding differences in periodic tables.

What is the atomic mass of carbon used in the calculation of C5H12's molar mass?

• 16.00 grams per mole

• 12.01 grams per mole

• 1.01 grams per mole

• 14.01 grams per mole

How many carbon atoms are present in a molecule of C5H12?

• 5

• 12

• 6

• 1

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

• 12.01 grams per mole

• 14.01 grams per mole

• 16.00 grams per mole

• 1.01 grams per mole

How is the molar mass of C5H12 calculated?

• By dividing the atomic masses by the number of atoms

• By subtracting the atomic masses of hydrogen from carbon

• By multiplying the atomic masses by the number of atoms and then adding

• By adding the atomic masses of carbon and hydrogen

What is the final molar mass of C5H12 as calculated in the video?

• 72.17 grams per mole

• 84.16 grams per mole

• 60.05 grams per mole

• 12.12 grams per mole

Why might your calculated molar mass differ slightly from the one in the video?

• Due to using a different chemical formula

• Due to rounding differences in the periodic table

• Because of a mistake in addition

• Because of incorrect multiplication