Question 1

What is the gas constant R?

Accepted Answer

R = 8.314 J/(mol·K) is the universal gas constant. It relates the energy scale to the temperature scale on a per-mole basis.

Question 2

When does the ideal gas law fail?

Accepted Answer

At very high pressures or very low temperatures, where gas molecules interact strongly. Real gas equations like van der Waals are used instead.

Ideal Gas Law

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