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

1. Matter and Measurements

Dimensional Analysis

GOB Chemistry

1. Matter and Measurements

Dimensional Analysis

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1:32 minutes

Problem 63b

Textbook Question

Using conversion factors, solve each of the following clinical problems:
b. A patient needs 0.024 g of a sulfa drug. There are 8-mg tablets in stock. How many tablets should be given?

Verified step by step guidance

Step 1: Identify the given values and the desired quantity. The patient needs 0.024 g of the sulfa drug, and the tablets in stock contain 8 mg each. The goal is to determine how many tablets are required.

Step 2: Convert the mass of the sulfa drug needed from grams to milligrams. Use the conversion factor: 1 g = 1000 mg. The equation is:

0.024 \times 1000 = 24

mg.

Step 3: Set up the problem using the conversion factor provided by the tablet dosage. Each tablet contains 8 mg of the sulfa drug. The equation to find the number of tablets is:

24 \div 8

tablets.

Step 4: Perform the division to determine the number of tablets required. Ensure the units cancel appropriately, leaving the result in tablets.

Step 5: Verify the result by checking that the calculated number of tablets provides the correct dosage of 0.024 g (or 24 mg) when multiplied by the tablet dosage of 8 mg.

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Key Concepts

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

Conversion Factors

Conversion factors are ratios that express how one unit of measurement relates to another. They are essential in solving problems that require unit changes, such as converting grams to milligrams. In this case, knowing that 1 gram equals 1000 milligrams allows for accurate calculations when determining the required dosage in tablets.

Dosage Calculation

Dosage calculation involves determining the correct amount of medication a patient should receive based on their needs and the available forms of the drug. This requires understanding the prescribed amount, the concentration of the medication, and how to convert these into practical units, such as tablets. Accurate dosage is critical for effective treatment and patient safety.

Medication Formulation

Medication formulation refers to the specific way a drug is prepared and presented for administration, such as tablets, capsules, or liquid. Each form has a defined strength, which is crucial for calculating the correct dosage. In this scenario, knowing that the sulfa drug is available in 8-mg tablets helps in determining how many tablets are needed to meet the patient's requirement of 0.024 g.

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