Molar Mass and Molecular Weight Concepts

Molar Mass and Molecular Weight Concepts

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Emma Peterson

FREE Resource

The video tutorial explains how to calculate the molecular weight of ozone (O3) using the periodic table. It highlights the importance of multiplying the atomic weight of oxygen by three, as O3 consists of three oxygen atoms. The tutorial emphasizes the necessity of using the correct units, grams per mole, in such calculations. Dr. B concludes the session by reiterating the key points.

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the weight of one mole of oxygen as found on the periodic table?

18 grams

20 grams

16 grams

12 grams

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you calculate the molecular weight of ozone (O3)?

Divide the weight of one oxygen atom by three

Add the weights of three hydrogen atoms

Multiply the weight of one oxygen atom by three

Subtract the weight of one oxygen atom from three

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the molecular weight of ozone (O3)?

32 grams per mole

44 grams per mole

48 grams per mole

50 grams per mole

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to use the correct units when finding molar mass?

To make the numbers look larger

To avoid using the periodic table

To confuse the students

To ensure accuracy in calculations

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What unit should be used when reporting molar mass?

Grams per mole

Moles

Grams

Moles per gram