Constants

Charge of Electron/Proton

±1.6 × 10^-19 Coulombs

Avogadro’s Number

6.022 × 10²³ Particles/mole

Planck’s Constant (h)

6.63 × 10^-34 J x s

Speed of Light (c)

3 × 10⁸ m/s

Rydberg Constant

2.18 × 10^-18 J

Gas Constant

8.314 J/mol*K or .08206 L*atm/K*mol

e (Euler’s Number) =

2.71 = 3

Specific Heat Capacity of Water

4.184 J/g*C

Boiling Point of Water

100^oC (373 K)

Melting Point of Water

0^oC (273 K)

Specific Heat Capacity of Ice

2.03 J/g*C

1 atm

760 mmHg

1 mol of gas @ STP =

22.4 L

Gas Constant for Thermodynamics

8.314 J/mol*K

Gas Constant for Gas Laws

.08206 L*atm/K*mol

K_w =

1.0 × 10^-14 @ 25 C ([H₃O⁺][OH^-]/[H₂O])

Faraday’s Constant

1 × 10⁵ Coulombs/mol

Joules to eV

1 J = 6.2 × 10¹⁸ ev

1 atm =

760 mmHg/Torr = 15 psi = 101 kPa

1 Coulomb =

A/s or J/V

Acceleration from Gravity =

-9.8 m/s²

ρ_water at 1 atm, 4^o C

1 g/cm³ = 1 g/mL = 1 kg/L = 1000 kg/m³

Coulomb’s Constant (k)

8.99 × 10⁹ N*m²/C²

I₀ =

1 × 10^-12 W/m²