BMED 2110 - Constants & Conversion Factors

C atomic weight

12.0

Ca atomic weight

40.0

Cl atomic weight

35.5

Fe atomic weight

55.8

H atomic weight

1.00

K atomic weight

39.1

N atomic weight

14.0

Na atomic weight

23.0

O atomic weight

16.0

S atomic weight

32.0

P atomic weight

31.0

water molecular weight

18

glucose molecular weight

180

amino acid molecular weight (avg)

135

dry air molecular weight

24.84

DNA base pair (avg) molecular weight

610

protein molecular weight

range 5000-3×10^6

P_A =

P_A = P_atm+P_G

1 g/cm³=

1 g/cm³ = 62.4 lb_m/ft = 8.33 lb_m/gal

1 ft³ =

1 ft³ = 7.48 gal = 28.3 L

Volume of 1 g-mol of an ideal gas @STP

22.4 L

Volume of 1 lb-mol of an ideal gas @ 32*F, 14.7 psia =

359 ft³

1 atm =

760 mmHg (aka torr) = 14.7 lb_f/in² (aka psia) = 29.92 in Hg = 34 ft H₂O = 1.013 bar = 101.3 kPa = 1.013 × 10⁶ dynes/cm²

1 Pa =

1 N/m

Systemic Blood Pressure

120/80 mmHg

1 kW =

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

1 cal =

4.184 J

1 J =

10⁷ dyne*cm

1 Btu =

252 cal = 778 ft-lb_f = 1055 J

22.4 L/mol @ STP =

359 ft³/lb_m-mole

1 lb_m=

1 lb_m= 16 oz = 454 g = 0.454 kg = 5×10^-4 ton

breathing info

total lung capacity = 6 L
tidal volume = 0.5 L
breaths/min = 12

change in 1*C =

change in 1.8*F

whole blood volume, resting cardiac output

5.0 L, 5.0 L/min

1 yd =

1 yd = 3 ft = 36 in = 91.44 cm

1 mi =

1 mi = 5280 ft = 1.61 km

typical mammalian cell

diameter of 10μm

dry air

volume = 79% N₂, 21% O₂

mol percentage = 79% N₂, 21% O₂

weight percentage = 76% N₂, 24% O₂

STP

0*C, 1 atm

1 kg =

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

*R, K

*R = *F+460, K = *C+273

1 food calorie

1000 calories

1 N =

1 kg*m/s²

1 m³ =

1 m³ = 1000 L = 10⁶ cm³ = 10⁶ mL

1 m =

1 m = 10⁶ microns = 10⁹ nm = 10¹⁰ angstroms

1 dyne =

1 g*cm/s²

1 lb_f=

1 lb_f=32.174 lb_m*ft/s²=4.448N = 4.448 kg*m/s² = 4.448×10⁵ dynes