Q0. Some useful fundamental constants and conversion factors
(a) NA = 6.022 × 1023 \text mol-1
(b) Rydberg constant = 2.178 × 10-18 J
(c) c = 2.998 × 108 \text ms-1
(d) k\rm B = 1.38 × 10-23 \text JK-1
(e) e = 1.602 × 10-19 C
(f) me = 9.109 × 10-31 kg
(g) F = 96485 C mol^{-1}
(h) R = 8.314 \text JK-1 \text mol-1
(i) h = 6.626 × 10-34 Js
(j) pi = 3.142
(k) 1 amu = 1.66 × 10-27 kg
(l) 1 cal = 4.184 J
(m) 1 J = 1 kg m2 s^{-2}
(n) 1 Å = 10^{-8} cm = 10^{-10} m = 0.1 nm = 100 pm
(o) 1 atm = 760 torr = 1.01325 × 105 Pa
(p) 1 bar = 1 × 105 Pa = 0.9869 atm
(q) 1 eV = 1.602 × 10-19 J
(r) 1 L atm = 101.34 J
