Table of contents

1. Matter and Measurements4h 29m
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 35m
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. Amines38m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 46m
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

Temperature (Simplified)

GOB Chemistry

1. Matter and Measurements

Temperature (Simplified)

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3:43 minutes

Problem 83Timberlake - 13th Edition

Textbook Question

What is -15 °F in degrees Celsius and in kelvins? (3.3)

Verified step by step guidance

Start by converting the temperature from Fahrenheit to Celsius using the formula: \( C = \frac{5}{9}(F - 32) \).

Substitute \(-15\) for \(F\) in the formula: \( C = \frac{5}{9}(-15 - 32) \).

Simplify the expression inside the parentheses: \(-15 - 32 = -47\).

Calculate the Celsius temperature: \( C = \frac{5}{9}(-47) \).

Convert the Celsius temperature to Kelvin using the formula: \( K = C + 273.15 \).

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Key Concepts

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

Temperature Conversion

Temperature conversion involves changing a temperature value from one scale to another, such as Fahrenheit to Celsius or Kelvin. The formulas for these conversions are essential: to convert Fahrenheit to Celsius, use the formula C = (F - 32) × 5/9, and to convert Celsius to Kelvin, use K = C + 273.15.

Fahrenheit Scale

The Fahrenheit scale is a temperature scale where water freezes at 32 degrees and boils at 212 degrees under standard atmospheric conditions. It is primarily used in the United States and a few other countries. Understanding this scale is crucial for converting temperatures to other scales.

Kelvin Scale

The Kelvin scale is an absolute temperature scale used in scientific contexts, where 0 K (absolute zero) is the point at which molecular motion ceases. The Kelvin scale does not use degrees; instead, it is measured in kelvins (K). It is directly related to the Celsius scale, making conversions straightforward.