The ideal-gas equation is

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

The ideal-gas equation is PV=nRTPV=nRT. Identify the units of RR when pressure is measured in Pa and volume is measured in m3\mathrm{m^3}. (1) J K−1\mathrm{J\,K^{-1}} (2) Pa m3 K−1 mol−1\mathrm{Pa\,m^3\,K^{-1}\,mol^{-1}} (3) J mol−1\mathrm{J\,mol^{-1}} (4) J mol K−1\mathrm{J\,mol\,K^{-1}}

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