Molar Mass and Chemical Formulas

The video tutorial explains how to calculate the molar mass of manganese sulfate monohydrate (MnSO4.H2O). It begins by introducing the concept and then details the molar masses of manganese, sulfur, oxygen, and water. The tutorial walks through the step-by-step calculation, resulting in a final molar mass of 169.03 grams per mole. The video concludes with a note on potential variations due to different periodic tables.

What is the chemical formula for manganese sulfate monohydrate?

• Mn2SO4

• MnO2

• MnSO4.2H2O

• MnSO4.H2O

What is the atomic mass of manganese as used in the video?

• 54.94 grams per mole

• 1.01 grams per mole

• 32.07 grams per mole

• 16.00 grams per mole

How many oxygen atoms are present in MnSO4?

• 4

• 1

• 2

• 3

What is the molar mass of water (H2O) as calculated in the video?

• 18.02 grams per mole

• 16.00 grams per mole

• 1.01 grams per mole

• 32.07 grams per mole

What is the total molar mass of MnSO4.H2O as calculated in the video?

• 169.03 grams per mole

• 180.18 grams per mole

• 150.00 grams per mole

• 200.00 grams per mole

What does the molar mass of 169 grams per mole represent?

• The mass of one mole of water

• The mass of one atom of manganese

• The mass of one molecule of MnSO4.H2O

• The mass of one mole of MnSO4.H2O

Why might the calculated molar mass differ slightly when using different periodic tables?

• Due to different chemical reactions

• Due to rounding differences

• Due to different chemical formulas

• Due to incorrect calculations