== CONSTANTS ==
h=6.626E-34 J-s (Planck)
c=2.998E8 m/s (speed of light)
N_A=6.022E23 mol-1 (Avogadro)
R=8.314 J/mol-K (gas constant)
R=0.08206 L-atm/mol-K
F=96485 C/mol-e (Faraday)
STP=273.15 K, 1.0 atm, 22.4 L/mol

== WATER ==
K_w=1.0E-14 (at 25 deg C)
pK_w=14 = pH + pOH
K_w = K_a * K_b

== EQUATIONS ==
Ideal gas: P*V = n*R*T
Boyle: P_1*V_1 = P_2*V_2
Dalton: P_tot = P_A + P_B + P_C
Mole fraction: X_A = moles_A / total_moles
Partial pressure: P_A = P_tot * X_A
Molarity: M = n_solute / L_solution
Density: D = m / V
KE = 0.5*m*v^2

== KINETICS ==
[A]_t - [A]_0 = -k*t
ln([A]_t/[A]_0) = -k*t
t_1/2 = 0.693/k

== EQUILIBRIUM ==
K = [C]^c*[D]^d / [A]^a*[B]^b
K_p uses partial pressures
pH = -log[H_3O^+]
pOH = -log[OH^-]
pH = pK_a + log(A^-/HA)

== THERMO ==
D_H_rxn = D_H_f_products - D_H_f_reactants
q = m*c*_T
D_S_rxn = D_S_products - D_S_reactants
D_G = D_H - T*D_S
D_G = -R*T*ln(K)
D_G = -n*F*E

== ELECTRO =
E_cell = E_cath - E_anod
E_cell = E_std - R*T/(n*F)*ln(Q)
E_cell = E_std - 0.0592/n*log(Q) (at 25 deg C)
Q = I*t