26th October 2019

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# What is the N in PV nRT?

In SI units, P is measured in pascals, V is measured in cubic metres, n is measured in moles, and T in kelvins (the Kelvin scale is a shifted Celsius scale, where 0.00 K = −273.15 °C, the lowest possible temperature). R has the value 8.314 J/(K. mol), or 0.08206 L. · atm/(mol.

Similarly, what is the value of R in PV nRT?

In that equation, R is a universal constant, which is the product of the Boltzmann constant with the Avogadro constant. Its value is R = 8.314 Joule per kg and per mole = 0.08206 L. atm. mol−1.

What is the ideal gas law?

An ideal gas can be characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them may be deduced from kinetic theory and is called the. n = number of moles. R = universal gas constant = 8.3145 J/mol K. N = number of molecules.

Which value of R to use?

It is crucial to match your units of Pressure, Volume, number of mole, and Temperature with the units of R. If you use the first value of R, which is 0.082057 L atm mol-1K-1, your unit for pressure must be atm, for volume must be liter, for temperature must be Kelvin.