





















molecular weight amino acid, avg 


molecular weight DNA base pair, avg 






molecular weight protein, range 


relate m, cm, mm, microns, nm, angstroms 

1 m = 100 cm = 1000 mm = e6 microns = e9 nm = e10 angstoms 




1 mi = 5,280 ft = 1.61 km 

typical mammalian cell, diameter 


kg to g to metric ton to lb 

1 kg = 1000 g = 0.001 metric ton = 2.2 lb 

lb to oz to g to kg to ton 

1 lb = 16 oz = 454 g = 0.454 kg = 5e4 ton 


1 m^3 = 1000 L = 1e6 cm^3 = 1e6 mL 











g/cm^3 to lb/ft^3 to lb/gal 

1 gm/cm^3 = 62.4 lb/ft^3 = 8.33 lb/gal 

1 g mol of an ideal gas at 0 degrees C, 760 mm Hg has what volume? 


1 lb mol of an ideal gas at 32 degrees F, 14.7 psia has what volume? 


atm to mm Hg at 0 degrees C to lb/in^2 (psi) 

1 atm = 760 mm Hg at 0 degrees C = 14.7 lb/in^2 

atm to in. Hg to ft water 

1 atm = 29.92 in. Hg = 34 ft water 

atm = bar = kPa = dynes/cm^2 

1 atm = 1.013 bar = 101.3 kPa = 1.013e6 dynes/cm^2 


1 ft^3 = 7.48 gal = 28.3 L 






delta 1.0 degree C = delta 1.8 degrees F 











lbf = lbm*ft/s^2 = N = kg*m/s^2 = dynes 

1 lbf = 32.174 lbm*ft/s^2 = 4.448N = 4.448 kg*m/s^2 = 4.448e5 dynes 






1 Nm = 1 kg*m^2/s^2 = 0.738 lbf*ft 


1 Btu = 252 cal = 778 ft*lbf = 1055 J 







Molar volume of an ideal gas at STP 

22.4 L/mol = 359 ft^3/lbm*mole 


1 kW = 1000 J/s = 1.34 hp = 239 cal/s 
