Final exam practice

Front

Using the balanced equation CaC₂(s) + 2 H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq), how many moles of Ca(OH)₂ would be produced if 3.5 moles of H₂O are consumed?

Back

1.75 moles

Front

What is the charge of the Oxide Ion?

Back

-2

Front

The substances listed on the left side of a chemical equation are called?

Back

Reactants

Front

If you have 3 silver atoms and two covalently bonded molecules, each with 1 phosphorus and 4 oxygen atoms, what would be the proper name of the compound?

Back

Silver (II) phosphate

Front

Michael is organizing a science fair and needs to arrange different types of booths. Which of the following has the correct number of booths and the correct number of participants that can be accommodated in each booth set?

Back

There are 5 d-booths that can hold 10 participants.

Front

What is the balanced equation for the reaction of calcium carbide with water?

Back

CaC₂(s) + 2 H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq)

Front

Define Reactants in a chemical equation.

Back

Reactants are the starting substances that undergo a chemical reaction.

Front

What is the significance of coefficients in a balanced chemical equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction.

Front

What is the formula for calculating moles from mass?

Back

Moles = Mass (g) / Molar Mass (g/mol)

Front

What is the molar mass of Ca(OH)₂?

Back

The molar mass of Ca(OH)₂ is approximately 74.09 g/mol.