Copper(II) Oxide Molar Mass and Properties

The video tutorial explains how to find the molar mass of copper(II) oxide (CuO). It begins by identifying CuO as a compound with copper in a +2 oxidation state and oxygen in a -2 state. The tutorial then demonstrates how to use the periodic table to find the atomic masses of copper and oxygen, which are 63.55 g/mol and 16.00 g/mol, respectively. By adding these values, the molar mass of CuO is calculated to be 79.55 g/mol. The video concludes by explaining that one mole of CuO weighs 79.55 grams.

What is the oxidation state of copper in Copper(II) Oxide?

• 2+

• 1+

• 3+

• 0

How many oxygen atoms are present in one formula unit of Copper(II) Oxide?

• Three

• Two

• One

• Four

What is the atomic mass of copper used in calculating the molar mass of Copper(II) Oxide?

• 65.38 g/mol

• 63.55 g/mol

• 60.00 g/mol

• 58.44 g/mol

What is the total molar mass of Copper(II) Oxide?

• 85.55 g/mol

• 80.00 g/mol

• 75.00 g/mol

• 79.55 g/mol

If you have 79.55 grams of Copper(II) Oxide, how many moles do you have?

• 1 mole

• 0.5 moles

• 2 moles

• 1.5 moles