Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
gas constant
B
ideal gas ratio
C
universal gas law
D
reciprocal gas factor
Understanding the Answer
Let's break down why this is correct
Answer
In the Ideal Gas Law, the symbol 'R' stands for the universal gas constant, which is a fixed value that links the macroscopic variables of a gas. It ensures that the equation balances units when pressure is in pascals, volume in cubic meters, temperature in kelvin, and moles in mol. The constant has a numerical value of about 8. 314 joules per mole‑kelvin, and it allows the law to work for any ideal gas. For example, if you have 1 mole of gas at 298 K in a 0.
Detailed Explanation
R is the gas constant, a fixed number that connects pressure, volume, temperature, and moles. Other options are incorrect because Thinking R is an "ideal gas ratio" is a mix‑up of what a ratio means; Calling R the "universal gas law" confuses the name of a constant with the name of a law.
Key Concepts
Ideal Gas Law
Gas Behavior
Thermodynamics
Topic
Ideal Gas Law
Difficulty
easy level question
Cognitive Level
understand
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