A gas occupies 10.0 L at standard temperature and pressure (STP). If the amount of gas is doubled, what is the new volume at STP?
Understand the Problem
The question involves the concept of Avogadro's Law, which states that the volume of a gas is directly proportional to the number of moles when temperature and pressure are kept constant. Since the amount of gas is doubled, we need to determine the new volume at standard temperature and pressure (STP).
Answer
The new volume is 20.0 L.
The new volume will be 20.0 L. According to Avogadro's law, if the amount of gas is doubled at constant temperature and pressure, the volume also doubles.
Answer for screen readers
The new volume will be 20.0 L. According to Avogadro's law, if the amount of gas is doubled at constant temperature and pressure, the volume also doubles.
More Information
Avogadro's Law states that for a fixed amount of gas, the volume of the gas is directly proportional to the number of moles, assuming the temperature and pressure remain constant.
Tips
A common mistake is to apply the ideal gas law (PV=nRT) incorrectly without recognizing the direct proportionality between volume and the amount of gas at constant temperature and pressure.
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