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Calculate pressure, volume, temperature, and moles using Ideal Gas Law, Boyle's Law, Charles's Law, and more.
PV = nRT
Relates pressure, volume, temperature, and amount of gas
Constant: R = 8.314 J/(mol·K)
The fundamental laws that describe how gases behave under different conditions
PV = nRT
Relates pressure, volume, temperature, and amount of gas
P₁V₁ = P₂V₂
Pressure and volume are inversely proportional at constant temperature
V₁/T₁ = V₂/T₂
Volume and temperature are directly proportional at constant pressure
P₁/T₁ = P₂/T₂
Pressure and temperature are directly proportional at constant volume
P₁V₁/T₁ = P₂V₂/T₂
Combines Boyle's, Charles's, and Gay-Lussac's laws
V₁/n₁ = V₂/n₂
Volume and amount of gas are directly proportional at constant T and P
Get accurate calculations in milliseconds
Ideal, Boyle's, Charles's, Combined, and more
Works with various pressure and volume units
Calculate any unknown from the known values
Perfect for learning gas behavior concepts
Precise enough for laboratory calculations
The Ideal Gas Law (PV = nRT) relates the pressure (P), volume (V), amount of gas in moles (n), and temperature (T) of an ideal gas. R is the universal gas constant (8.314 J/mol·K).
Use Boyle's Law (P₁V₁ = P₂V₂) when temperature is constant and you need to find how pressure and volume change relative to each other.
Always use Kelvin (K) for gas law calculations. Convert Celsius to Kelvin by adding 273.15. Using Celsius or Fahrenheit will give incorrect results.
An ideal gas is a theoretical gas composed of randomly moving particles that don't interact except during elastic collisions. Real gases approximate ideal behavior at low pressure and high temperature.
1 atm = 101,325 Pa = 760 mmHg = 14.7 psi = 1.01325 bar. Make sure all your values are in consistent units before calculating.
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