UNITS, CONVERSIONS & CONSTANTS

Constants & Conversion Factors:

1 N = 1 kg m s^-2 1 Pa = 1 kg m^-1 s^-2 = N / m²

1 J = N m =1 kg m² s^-2 1 bar » 1 atm

1 atm = 760 torr 1 atm = 760 mm Hg

T(K)=T(^oC)+273.15 R = 0.08206 atm(L)/mol(K) = 8.3145 J mol^-1 K^-1

k_B=1.38×10^-23 J/K 1 L atm = 101.34 J

1L = 1x10^-3 m³ N_A = 6.02214x10²³

1 bar = 1x10⁵ Pa 1 cal = 4.184 J

F = 96485 C/mol c = 2.998×10⁸ m/s

RT/F = 25.693 mV 1 eV = 8065.5 cm^-1

e = 2.71828 p = 3.14159

e = 1.6×10^-19 C h = 6.626×10^-34 J s

e_o = 8.854×10^-12 C²/J m A = 0.509 (water, Debye-Huckel constant)

g = 9.8 m/s² 1 Amp = 1 A = 1 C/s (Coulomb per sec)

Mathematical Relationships:

ln x = ln 10 * log x » 2.3 log x

ln x + ln y = ln xy ln x – ln y = ln(x/y)

d ln x / dx = 1/x d(f+g) = df + dg

d(fg) = fdg + gdf d(f/g) = 1/g df = f/g² dg

Stirlings Approx: ln N! = N ln N – N

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