Molar Mass and Conversion Concepts

Molar Mass and Conversion Concepts

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Amelia Wright

FREE Resource

This video tutorial demonstrates how to convert 0.66 moles of iron(III) nitrate (FeNO3) to grams. It begins by explaining the need to multiply the number of moles by the molar mass to achieve the conversion. The video guides viewers through finding the molar mass using the periodic table, resulting in 241.88 grams per mole for iron(III) nitrate. The tutorial then shows the multiplication process, leading to a final result of 159.64 grams. Additionally, it briefly covers the reverse process of converting grams to moles by dividing by the molar mass. The video concludes with a recap of the conversion process.

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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial quantity of Iron(III) Nitrate given in the problem?

0.66 grams

0.66 moles

1 gram

1 mole

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in converting moles to grams?

Subtract the atomic masses

Multiply by the molar mass

Add the atomic masses

Divide by the molar mass

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where can you find the atomic masses needed for calculating the molar mass?

On the periodic table

In the video description

On a calculator

In a chemistry textbook

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the molar mass of Iron(III) Nitrate used in the calculation?

200 grams per mole

100 grams per mole

159.64 grams per mole

241.88 grams per mole

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final result of converting 0.66 moles of Iron(III) Nitrate to grams?

66 grams

100 grams

159.64 grams

241.88 grams

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of multiplying moles by the molar mass?

To convert to liters

To find the volume

To convert to grams

To find the number of atoms

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit for molar mass?

Moles per gram

Liters per mole

Grams per liter

Grams per mole

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do you do to convert grams back to moles?

Subtract the atomic masses

Add the atomic masses

Divide by the molar mass

Multiply by the molar mass