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Mole Chalk Lab

Authored by Lisa Thompson

Science

11th Grade

NGSS covered

Mole Chalk Lab
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25 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A sample of calcium oxide (CaO) has a mass of 2.80 g. The molar mass of CaO is 56.08 g/mol. How many moles of CaO does this sample contain?

0.0499

20.0

58.9

157

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In a Mole Chalk Lab, you start with 5.00 g of calcium carbonate (CaCO3). The molar mass of CaCO3 is 100.09 g/mol. How many moles of CaCO3 do you have?

0.0500

0.500

5.00

50.0

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

During the Mole Chalk Lab, you react calcium carbonate with hydrochloric acid. What gas is produced in this reaction?

Oxygen

Carbon dioxide

Hydrogen

Nitrogen

Tags

NGSS.MS-PS1-2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If you have 0.25 moles of calcium carbonate, how many grams of calcium carbonate do you have? (Molar mass of CaCO3 = 100.09 g/mol)

25.0 g

50.0 g

75.0 g

100.0 g

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the Mole Chalk Lab, what is the primary purpose of using hydrochloric acid?

To dissolve the chalk

To neutralize the base

To produce carbon dioxide

To increase the temperature

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

@@ ext{CaCO}_3 + ext{HCl} ightarrow ext{CaCl}_2 + ext{H}_2 ext{O} + ext{CO}_2@@

@@ ext{CaCO}_3 + 2 ext{HCl} ightarrow ext{CaCl}_2 + ext{H}_2 ext{O} + ext{CO}_2@@

@@ ext{CaCO}_3 + ext{HCl} ightarrow ext{CaCl}_2 + ext{CO}_2 + ext{H}_2 ext{O}@@

@@ ext{CaCO}_3 + 2 ext{HCl} ightarrow ext{CaCl}_2 + ext{CO}_2 + ext{H}_2 ext{O}@@

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the context of the Mole Chalk Lab, what is the role of calcium carbonate?

Acid

Base

Reactant

Product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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