Mole Chalk Mini-Lab

Chalk is mostly made of calcium carbonate, CaCO₃. If it took 48.6 g of chalk to write your name on the sidewalk, how many moles of calcium carbonate does your name contain?

• 0.486 mol

• 0.714 mol

• 1.40 mol

• 2.06 mol

Tags

NGSS.HS-PS1-7

Water and sand were swirled around a piece of chalk in the lab.

What happened to the piece of chalk? (Choose two correct answers)

• It became larger

• It became smaller

• Small pieces of the chalk broke off

• The chalk chemically reacted with the sand

Tags

NGSS.MS-PS1-2

Chalk is mostly made of calcium carbonate, CaCO_3. If it took 48.6 g of chalk to write your name on the sidewalk, how many moles of calcium carbonate does your name contain?

• 0.486 mol

• 0.714 mol

• 1.40 mol

• 2.06 mol

• 100.09 g/mol

• 50.05 g/mol

• 150.14 g/mol

• 200.18 g/mol

If you have 10.0 g of calcium carbonate, how many moles do you have?

• 0.100 mol

• 0.200 mol

• 0.300 mol

• 0.400 mol

In a mini-lab, you react calcium carbonate with hydrochloric acid. What gas is produced?

• Oxygen

• Carbon dioxide

• Hydrogen

• Nitrogen

Tags

NGSS.MS-PS1-2

What is the balanced chemical equation for the reaction between calcium carbonate and hydrochloric acid?

Tags

NGSS.HS-PS1-7

If 5.0 g of calcium carbonate is completely reacted with excess hydrochloric acid, how many grams of carbon dioxide are produced?

• 2.2 g

• 4.4 g

• 1.1 g

• 3.3 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the role of calcium carbonate in the reaction with hydrochloric acid?

• Oxidizing agent

• Reducing agent

• Acid

• Base

Tags

NGSS.MS-PS1-2

How many moles of hydrochloric acid are needed to completely react with 1 mole of calcium carbonate?

• 1 mole

• 2 moles

• 3 moles

• 4 moles

Tags

NGSS.MS-PS1-5