| 单词 | gas constant |
| 释义 | > as lemmasgas constant gas constant n. Physical Chemistry the constant of proportionality, R, in the equation of state for an ideal gas, nRT = PV, where P is the pressure, V is the volume, n is the number of moles of gas, and T is the absolute temperature; cf. R n. 7.The gas constant is approx. equal to 8.314 joule kelvin−1 mole−1. ΚΠ 1851 tr. R. Clausius in London, Edinb., & Dublin Philos. Mag. 4th Ser. 2 7 pv = R(a + t),..where p, v, and t express the pressure, volume, and temperature, of the gas..and R also a constant.] 1890 W. Ostwald Outl. Gen. Chem. vii. 248 R being the gas-constant (equal in thermal measurement to 2 cal. for a gram-molecular weight). 1955 Science 28 Oct. 831/2 RT is the gas constant, 1.987 cal deg−1 mole−1, times the temperature, 298.1 °K. 1994 New Scientist 3 Dec. 81/2 Boltzmann's entropy constant (the gas constant divided by Avogadro's number) is 1.4 x10-23 joules per kelvin. < as lemmas |
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