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Ideal Gas Law:
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The ideal gas law is a fundamental equation in thermodynamics that describes the relationship between pressure, volume, temperature, and the number of moles of an ideal gas. It provides a mathematical model for predicting the behavior of gases under various conditions.
The calculator uses the ideal gas law equation:
Where:
Explanation: The equation calculates the pressure exerted by a given amount of gas in a specific volume at a particular temperature, assuming ideal gas behavior.
Details: Accurate pressure calculation is crucial for various applications including chemical engineering, atmospheric studies, industrial processes, and scientific research involving gas behavior.
Tips: Enter the number of moles, gas constant (default is 8.314 J/mol·K), temperature in Kelvin, and volume in cubic meters. All values must be positive numbers.
Q1: What is an ideal gas?
A: An ideal gas is a theoretical gas that follows the ideal gas law exactly, with particles that have no volume and no intermolecular forces.
Q2: When is the ideal gas law not accurate?
A: The law becomes less accurate at high pressures and low temperatures, where real gases deviate from ideal behavior due to molecular interactions and finite molecular size.
Q3: Why use Kelvin for temperature?
A: Kelvin is an absolute temperature scale where 0K represents absolute zero, making it appropriate for gas law calculations that involve temperature ratios.
Q4: Can this calculator be used for other gases?
A: Yes, the ideal gas law applies to all ideal gases. For nitrogen specifically, the calculation remains the same as for any other ideal gas.
Q5: What are typical pressure values for nitrogen?
A: Nitrogen pressure can vary widely depending on conditions. At standard temperature and pressure (STP), nitrogen exerts about 101,325 Pa (1 atmosphere).