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

Periodic Table: Classifications

GOB Chemistry

2. Atoms and the Periodic Table

Periodic Table: Classifications

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1:16 minutes

Problem 15c

Textbook Question

Using the Chemistry Link to Health: Elements Essential to Health, answer each of the following:
c. How many grams of sulfur would be a typical amount in a 60.-kg adult?

Verified step by step guidance

Identify the percentage of sulfur in the human body from the Chemistry Link to Health: Elements Essential to Health. For example, sulfur might make up approximately 0.2% of the human body by mass.

Convert the percentage of sulfur into a decimal for calculation purposes. For instance, 0.2% would be written as 0.002.

Determine the total mass of the adult in kilograms, which is given as 60. kg in the problem.

Calculate the mass of sulfur in the body by multiplying the total body mass by the decimal form of the sulfur percentage. Use the formula:

m sulfur = m body \times percentage sulfur

Ensure the result is expressed in grams. Since the body mass is given in kilograms, convert the sulfur mass from kilograms to grams by multiplying by 1000 (1 kg = 1000 g).

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Key Concepts

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

Essential Elements in Human Health

Essential elements are minerals and compounds that the human body requires for various physiological functions. These include macrominerals like calcium and magnesium, as well as trace elements like sulfur, which play critical roles in processes such as protein synthesis and enzyme function.

Sulfur's Role in the Body

Sulfur is a vital element in the human body, primarily found in amino acids like cysteine and methionine. It contributes to the structure of proteins and is involved in detoxification processes, making it essential for overall health and metabolic functions.

Calculating Elemental Composition

To determine the amount of sulfur in a 60-kg adult, one must understand the typical percentage of sulfur in the human body, which is about 0.25% of total body weight. This calculation involves multiplying the body weight by the percentage to find the total grams of sulfur present.