Home/Basic Physics/Thermodynamics/Internal energy of a monatomic ideal gas15. ThermodynamicsInternal energy of a monatomic ideal gasIn 15. ThermodynamicsFormulaCopy LaTeXU=32nRTU=\frac32nRTU=23nRTChangeCopy LaTeXΔU=32nRΔT\Delta U=\frac32nR\Delta TΔU=23nRΔTTagsenergyphysicsphysics formulathermodynamicsDetailThe internal energy of a monatomic ideal gas is (3/2)nRT.Explore the ideaExplore the ideaFound an error? Contact us.Related formulasRelatedIdeal gas equationPV=nRTPV=nRTPV=nRTOpen formulaOpen in sectionRelatedThermodynamic workW=∫ViVfP dVW=\int_{V_i}^{V_f}P\,dVW=∫ViVfPdVOpen formulaOpen in section