Moles in Equation (1)

Why is it crucial to know the correct mass of copper oxide to use?

• To save time and effort

• To impress customers

• To make the solution colorful

• To ensure all reactants dissolve

What is the molar mass of copper sulfate calculated in the video?

• 100 grams per mole

• 79.5 grams per mole

• 63.5 grams per mole

• 249.5 grams per mole

In the harbor process, what is the limiting reagent?

• Ammonia

• Nitrogen gas

• Copper oxide

• Hydrogen gas

How many moles of nitrogen are needed to produce 4,000 moles of ammonia?

• 4,000 moles

• 1,000 moles

• 2,000 moles

• 3,000 moles

What does it mean when a reactant is in excess?

• There is more than needed

• It is not needed at all

• It is the main product

• It is used up completely