Which gas law states that the volume of a gas is directly proportional to the number of moles at constant temperature and pressure?

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Q: Which gas law states that the volume of a gas is directly proportional to the number of moles at constant temperature and pressure?

Solution: Avogadro's Law states that the volume of a gas is directly proportional to the number of moles at constant temperature and pressure.

Steps: 6

Step 1: Understand what a gas law is. A gas law describes how gases behave under different conditions.
Step 2: Know that volume refers to the amount of space a gas occupies.
Step 3: Recognize that moles measure the amount of substance in chemistry.
Step 4: Remember that temperature and pressure are kept constant in this scenario.
Step 5: Identify that Avogadro's Law specifically relates the volume of a gas to the number of moles.
Step 6: Conclude that Avogadro's Law states that if you increase the number of moles of gas, the volume increases, as long as temperature and pressure stay the same.