Molecular Weight of Fe2O3

This video tutorial explains how to calculate the molecular weight or molar mass of iron(III) oxide (Fe2O3). It begins by identifying the molecular weights of iron and oxygen from the periodic table. The tutorial then demonstrates how to use the subscripts in the chemical formula to calculate the total molecular weight, resulting in a final value of 159.70 grams per mole. The video concludes with a summary of the calculation process.

What is the main objective of the video?

• To explain the periodic table

• To calculate the molecular weight of Fe2O3

• To demonstrate a chemical reaction

• To discuss the properties of iron

What is the molecular weight of iron as mentioned in the video?

• 15.999 grams per mole

• 16.00 grams per mole

• 55.85 grams per mole

• 159.70 grams per mole

What is the molecular weight of oxygen used in the calculation?

• 16.00 grams per mole

• 15.999 grams per mole

• 48.00 grams per mole

• 55.85 grams per mole

How many times is the molecular weight of iron multiplied in the calculation?

• 4

• 1

• 3

• 2

What is the result of multiplying the molecular weight of oxygen by its subscript?

• 16.00

• 48.00

• 64.00

• 32.00

What is the total molecular weight of Fe2O3 calculated in the video?

• 159.70 grams per mole

• 48.00 grams per mole

• 207.70 grams per mole

• 111.70 grams per mole

What is the significance of the subscripts in the chemical formula Fe2O3?

• They indicate the number of molecules

• They show the ratio of atoms in the compound

• They are used to balance chemical equations

• They represent the charge of the compound