Inorganic Chemicals

Temperature

°C = (°F –32)/1.8
°F = 1.8°C + 32
°K = °C + 273.15

Pressure

1 atm = 101.365 KPa
1 atm = 101,365 Pa
1 atm = 0.101365 MPa
1 MPa = 9.87 atm
1 atm = 760 torr = 760 mm Hg
1 atm = 14.696 psi
1 KPa = 7.50 torr

Volume

1 L = 1,000 mL
1 mL = 1 cubic centimeter (cc)
1 m³ = 1000 L
1 gal (US) = 3.784 L
1 quart (qt) = 946.4 mL
1 tablespoon = 14.79 mL
1 teaspoon = 4.93 mL

Energy

1 cal = 4.184 J
1 kcal = 1,000 cal
1 kJ = 1,000 J
1 eV = 1.602 x 10–19 J
1 MeV = 1.602 x 10–13 J

Distance, Bond Length and Atomic Radii

1 km = 1,000 m
1 m = 100 cm or 1,000 mm
1 mm = 1,000 μm
1 μm = 1,000 mm
1 nm = 1,000 pm
1 m = 10⁶ mm or 10⁹ nm
1 mho = 1 siemen (S)
1 Å = 10⁻¹⁰ m
1 Å = 10pm
1 micron = 1 micorometer (μm)

Density

Solid = g/cm³
Liquid = g/mL
Gas = g/L
Density of gas/vapor at STP = molecular wt(g)/22.4 L
Vapor density (times heavier than air) = molecular wt/29

Concentration

1ppm (w/w) = 1mg/L (in aqueous solution)
1M = mol/L
1N = gram equivalent weight/L
1 m = mol/kg solvent

Miscellaneous

1dyne/cm² = 0.10 Pa
1 erg = 10⁻⁷ J
1 erg/s = 10⁻⁷watt (W)
1 Faraday = 96,495 coulomb (C)
1 inch = 2.54 cm
1 mho = 1 siemen (S)
1 ohm.cm = 10⁻² ohm.cm
1 ohm.cm = 10⁶ microhm.cm
1 centipoise = 0.001 Pascal-second
1 centistoke = 1 x 10⁻⁶ m²/sec