In Chemistry, What Is Constant R?

In chemistry, the constant R stands for the universal gas constant. R is equal to 8.31 joules per mole-Kelvin or 0.08 liter-atmospheres per mole-Kelvin. It is the expression of the Boltzmann constant, k, in units of energy.

R is most commonly used in the equation PV = nRT, which is the ideal gas law. The variable P is the pressure, V is the volume, n is the number of moles and T is the temperature. The universal gas constant is also used in the equation R = work/(amount x temperature). The exact value of R is based on the speed of sound in the gas argon.

World View

Peddling the Past: The Value of Vintage Newspapers

Pets & Animals

Wellness Safari: Giraffes May Hold the Biological Keys to Combating Hypertension

World View

Who Is Persephone and What Is Her Origin Story?

World View

What is the “When is a Door Not a Door?” Riddle

History

To Wimbledon and Back: The History of Grand Slam Tournaments

Science

What is A Strawberry Moon? A Year-Round Glossary of Named Moons