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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1:59 minutes

Problem 100

Textbook Question

In Mexico, avocados are 48 pesos per kilogram. What is the cost, in cents, of an avocado that weighs 0.45 lb if the exchange rate is 18 pesos to the dollar?

Verified step by step guidance

Convert the weight of the avocado from pounds to kilograms using the conversion factor: 1 lb = 0.453592 kg. Multiply 0.45 lb by 0.453592 kg/lb to find the weight in kilograms.

Calculate the cost of the avocado in pesos by multiplying the weight in kilograms by the price per kilogram (48 pesos/kg).

Convert the cost from pesos to dollars using the exchange rate: 1 dollar = 18 pesos. Divide the cost in pesos by 18 to find the cost in dollars.

Convert the cost from dollars to cents by multiplying the cost in dollars by 100 (since 1 dollar = 100 cents).

Combine all the steps into a single calculation if needed, ensuring proper unit conversions and consistency throughout the process.

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Key Concepts

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

Unit Conversion

Unit conversion is the process of converting a measurement from one unit to another. In this question, it is necessary to convert the weight of the avocado from pounds to kilograms, as the price is given per kilogram. Knowing that 1 pound is approximately 0.453592 kilograms will help in making this conversion accurately.

Currency Exchange Rate

The currency exchange rate indicates how much one currency is worth in terms of another. In this case, the exchange rate of 18 pesos to the dollar means that for every dollar, you can get 18 pesos. This rate is crucial for converting the total cost of the avocado from pesos to cents, as it allows for the calculation of the equivalent value in a different currency.

Cost Calculation

Cost calculation involves determining the total price of an item based on its weight and price per unit. Here, the cost of the avocado can be calculated by multiplying its weight in kilograms by the price per kilogram (48 pesos). This step is essential to find the total cost before converting it to cents, ensuring that all calculations are based on consistent units.

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