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The ideal gas constant is the same for all gases but can vary based on which units are being used, the most common expressions are R = 0.0821 (L • atm/ mol • K) OR R = 8.31 (J/ mol • K). Each of the four variables ( within the ideal gas law formula) can be solved interchangeably while R will always stay constant.

The units of measurement being utilised affect the value of R. When dealing with energy units, molar amounts, and Kelvin temperature, the value 8.314 J/(molK) is utilised in SI units. In non-SI units, especially when dealing with litres, atmospheres, and mol K, the value 0.0821 L atm/mol K is utilised.

For the most part gasses all follow the equation: PV = nRT which can also be written where P is pressure (in atm), V is volume (in liters), n is number of moles and T is temperature (in K). R is a constant and is equal to 0.08206 L atm/moleK.

The gas constant R is 8.314 J / mol·K. Convert the numerical value of R so that its units are cal / (mol·K). A unit conversion table will tell you that 1 cal = 4.184 J. Make sure you know where to find it.

The gas constant is a physical constant denoted by R and is expressed in terms of units of energy per temperature increment per mole. It is also known as the ideal gas constant or molar gas constant or universal gas constant.

To decide which R value to use in a given situation, you have to look at both the units of the other values involved in the calculation and the units you are trying to solve for. Once you've figured both the units out, you have to choose whichever R value will give you the correct units in your calculation.

The ideal gas law (in terms of moles) is PV = nRT. The numerical value of R in SI units is R = N_{A}k = (6.02 × 10^{23} mol^{−}^{1})(1.38 × 10^{−}^{23} J/K) = 8.31 J/mol · K. You can use whichever value of R is most convenient for a particular problem.

P V = n R T In this equation, P is the pressure of the gas, V is the volume, n is the number of moles, and T is the temperature of the gas. R is the "ideal gas constant." Ideal Gas Constant: The ideal gas constant is a physical constant used in the ideal gas law.

If you are using all other values in SI units (e.g. Pressure in Pa, Volume in m^3 and Temperature in K) then you should use R=8.314 J/mol/K. But if you are taking Pressure in atm unit, volume in L and Temperature in K then you should use R=0.0821 L-atm/mol/K.

PV = nRT. where P = pressure (atm), V = volume (L), n = number of moles (mol),T = temperature (K) and R = 0.08206 L · atm/mol · K, Take a look at the units of R, they tell you what the other units have to be in.

Osmotic Pressure. Where: M is the molar concentration of dissolved species (units of mol/L). R is the ideal gas constant (0.08206 L atm mol^{-}^{1} K^{-}^{1}, or other values depending on the pressure units).

Introduction: My name is Merrill Bechtelar CPA, I am a clean, agreeable, glorious, magnificent, witty, enchanting, comfortable person who loves writing and wants to share my knowledge and understanding with you.

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