Learning Path
Question & Answer
Choose the Best Answer
The pressure of the gas decreases.
The gas molecules gain mass.
The gas is being compressed.
The gas molecules lose energy.
Understanding the Answer
Let's break down why this is correct
When the size of the container grows and the gas stays the same amount and temperature, the pressure must drop to keep the balance of PV = nRT. Other options are incorrect because Adding more mass would mean adding more gas, which would increase pressure or volume, not just change volume alone; Compression squeezes the gas, which actually reduces volume.
Key Concepts
Ideal Gas Law
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Deep Dive: Ideal Gas Law
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Definition
The Ideal Gas Law states that for one mole of gas at room temperature and one atmosphere pressure, the volume is approximately 24 liters, regardless of the gas type. This law defines the relationship between pressure, volume, temperature, and the number of gas molecules, providing a basis for understanding gas behavior in various conditions.
Topic Definition
The Ideal Gas Law states that for one mole of gas at room temperature and one atmosphere pressure, the volume is approximately 24 liters, regardless of the gas type. This law defines the relationship between pressure, volume, temperature, and the number of gas molecules, providing a basis for understanding gas behavior in various conditions.
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