• # of particles = 6.02 x 10^23 (n)
  • n = mols
  • avogadro's constant: 6.02 x 10^23
  • # of particles
    • molecules
    • atoms
    • formula units (ionic compounds)

PV = nRT:

• STP
  • T = 0 C = 273 K
  • P = 101.325 kPa
  • R = 8.314
• SATP
  • T = 25 C = 298 K
  • P = 100 kPa
  • R = 8.314
• 101.325kPa = 1 atm = 760 mmHg
  • R = 0.0826

Bohr atomic theory:

• h = 6.63 x 10^-34 ...m^2 kg / s
• c = 3.0 x 10^8 ...m / s
• E = hf = Eh - El
• c = wavelength x frequency