Molar Mass and Molecular Formulas

Molar Mass and Molecular Formulas

Assessment

Interactive Video

Chemistry

10th - 12th Grade

Practice Problem

Hard

Created by

Jackson Turner

FREE Resource

The video tutorial explains how to calculate the molar mass of acetylsalicylic acid, commonly known as aspirin. It begins by identifying the molecular formula of aspirin as C9H8O4. The tutorial then demonstrates how to use the periodic table to find the atomic masses of carbon, hydrogen, and oxygen. By multiplying these atomic masses by the number of each type of atom in the formula and summing the results, the molar mass of aspirin is calculated to be 180.17 grams per mole. The video concludes with a brief summary of the process.

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9 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is another name for acetosalicylic acid?

Ibuprofen

Paracetamol

Naproxen

Aspirin

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many carbon atoms are present in the molecular formula of aspirin?

6

8

12

9

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the molecular formula of aspirin?

C8H10O2

C10H8O4

C9H8O4

C7H6O3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the atomic mass of carbon used in the calculation?

1.01 g/mol

16.00 g/mol

14.01 g/mol

12.01 g/mol

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many hydrogen atoms are in the aspirin molecule?

6

8

10

12

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the atomic mass of oxygen used in the calculation?

12.01 g/mol

14.01 g/mol

16.00 g/mol

1.01 g/mol

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the calculated molar mass of aspirin?

180.17 g/mol

150.17 g/mol

200.17 g/mol

170.17 g/mol

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