Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

2. Atoms and the Periodic Table

The Atom (Simplified)

GOB Chemistry

2. Atoms and the Periodic Table

The Atom (Simplified)

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2:09 minutes

Problem 52

Textbook Question

Write the formula for ibuprofen: 13 carbons, 18 hydrogens, and 2 oxygens. What are the common uses of ibuprofen?

Verified step by step guidance

Step 1: To write the molecular formula for ibuprofen, count the number of each type of atom present in the molecule. According to the problem, ibuprofen contains 13 carbon atoms, 18 hydrogen atoms, and 2 oxygen atoms.

Step 2: Combine the counts of each atom into a molecular formula. The general format for a molecular formula is to list the elements in the order of carbon (C), hydrogen (H), and then oxygen (O), followed by their respective counts.

Step 3: Write the molecular formula for ibuprofen as \( \text{C}_{13}\text{H}_{18}\text{O}_2 \) using the counts provided.

Step 4: Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID). It is commonly used to reduce fever, relieve pain (such as headaches, muscle aches, or menstrual cramps), and decrease inflammation (such as swelling caused by arthritis).

Step 5: Note that the molecular formula \( \text{C}_{13}\text{H}_{18}\text{O}_2 \) represents the composition of ibuprofen but does not provide structural information about how the atoms are arranged. The structural formula would show the specific arrangement of atoms in the molecule.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Chemical Formula

The chemical formula of a compound provides a concise representation of its molecular composition, indicating the number of each type of atom present. For ibuprofen, the formula C13H18O2 reflects that it contains 13 carbon atoms, 18 hydrogen atoms, and 2 oxygen atoms. Understanding chemical formulas is essential for identifying the structure and potential reactivity of a substance.

Pharmacological Uses

Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) commonly used to relieve pain, reduce inflammation, and lower fever. It is effective for various conditions, including headaches, muscle aches, arthritis, and menstrual cramps. Recognizing its pharmacological uses helps in understanding its role in pain management and its therapeutic applications.

Mechanism of Action

The mechanism of action of ibuprofen involves the inhibition of cyclooxygenase (COX) enzymes, which play a crucial role in the synthesis of prostaglandins—compounds that mediate inflammation and pain. By blocking these enzymes, ibuprofen reduces the production of prostaglandins, leading to decreased inflammation and pain relief. This understanding is vital for comprehending how ibuprofen functions in the body.

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