Molar Mass and Chemical Formulas

The video tutorial explains how to find the molar mass of iron II hydroxide. It begins by introducing the concept of molar mass and then provides the atomic masses of iron, oxygen, and hydrogen from the periodic table. The tutorial demonstrates how to use these values to calculate the molar mass of iron II hydroxide, emphasizing the use of parentheses in the chemical formula. The final calculation results in a molar mass of 89.87 grams per mole. The video concludes with a summary of the process.

What is the atomic mass of Iron (Fe) used in the calculation of Iron II Hydroxide's molar mass?

• 89.87 grams per mole

• 55.85 grams per mole

• 16.00 grams per mole

• 1.01 grams per mole

Which element's atomic mass is 16.00 grams per mole?

• Carbon

• Hydrogen

• Oxygen

• Iron

In the chemical formula Fe(OH)2, what does the '2' outside the parentheses indicate?

• It applies to the entire compound

• It applies only to Iron

• It applies to everything inside the parentheses

• It applies only to Oxygen

What is the total mass of the elements inside the parentheses in Fe(OH)2?

• 16.00 grams per mole

• 55.85 grams per mole

• 34.02 grams per mole

• 1.01 grams per mole

What is the final molar mass of Iron II Hydroxide (Fe(OH)2)?

• 55.85 grams per mole

• 72.00 grams per mole

• 89.87 grams per mole

• 34.02 grams per mole