Calculating Gram Formula Mass

This video tutorial explains how to calculate gram formula mass using chemical formulas and data books. It provides examples with aluminium oxide, magnesium sulfate, and calcium nitrate, detailing the steps to find the relative atomic masses and perform calculations for each compound.

What is the first step in calculating gram formula mass?

• Calculate the density

• Determine the number of moles

• Find the molecular weight

• Write out the chemical formula

If the relative atomic mass of aluminum is 27, what is the total mass for two aluminum atoms?

• 27

• 54

• 81

• 108

How do you calculate the gram formula mass of oxygen in a compound with three oxygen atoms?

• Multiply 16 by 2

• Multiply 16 by 3

• Multiply 16 by 4

• Multiply 16 by 5

What is the gram formula mass of magnesium in magnesium sulfate?

• 32

• 24.5

• 16

• 64

In magnesium sulfate, how many oxygen atoms are considered in the calculation?

• Five

• Two

• Three

• Four

What is the total gram formula mass of magnesium sulfate?

• 102

• 120.5

• 164

• 96

What is the relative atomic mass of calcium in calcium nitrate?

• 40

• 14

• 16

• 28

How many nitrogen atoms are present in calcium nitrate?

• Three

• Two

• One

• Four

What is the total mass of oxygen in calcium nitrate if there are six oxygen atoms?

• 48

• 112

• 96

• 64

What is the final gram formula mass of calcium nitrate?

• 120.5

• 164

• 102

• 96