O 16.00
Palladium Pd 106.5
*Phosphorus P 31.0
*Platinum Pt 194.8
*Potassium K 39.15
Praseodymium Pr 140.5
Radium Ra 225.0
Rhodium Rh 103.0
Rubidium Rb 85.5
Ruthenium Ru 101.7
Samarium Sm 150.3
Scandium Sc 44.1
Selenium Se 79.2
*Silicon Si 28.4
*Silver Ag 107.93
*Sodium Na 23.05
*Strontium Sr 87.6
*Sulphur S 32.06
Tantalum Ta 183.0
Tellurium Te 127.6
Terbium Tb 160.0
Thallium Tl 204.1
Thorium Th 232.5
Thulium Tm 171.0
*Tin Sn 119.0
Titanium Ti 48.1
Tungsten W 184.0
Uranium U 238.5
Vanadium V 51.2
Xenon Xe 128.0
Ytterbium Yb 173.0
Yttrium Yt 89.0
*Zinc Zn 65.4
Zirconium Zr 90.6

APPENDIX B

Tension of Aqueous Vapor expressed in Millimeters of Mercury

TEMPERATURE PRESSURE
16 13.5
17 14.4
18 15.3
19 16.3
20 17.4
21 18.5
22 19.6
23 20.9
24 22.2
25 23.5

Weight of 1 Liter of Various Gases measured under Standard Conditions

Acetylene 1.1614
Air 1.2923
Ammonia 0.7617
Carbon dioxide 1.9641
Carbon monoxide 1.2499
Chlorine 3.1650
Hydrocyanic acid 1.2036
Hydrochloric acid 1.6275
Hydrogen 0.08984
Hydrosulphuric acid 1.5211
Methane 0.7157
Nitric oxide 1.3410
Nitrogen 1.2501
Nitrous oxide 1.9677
Oxygen 1.4285
Sulphur dioxide 2.8596

Densities and Melting Points of Some Common Elements

DENSITY MELTING POINT
Aluminium 2.68 640
Antimony 6.70 432
Arsenic 5.73 --
Barium 3.75 --
Bismuth 9.80 270
Boron 2.45 --
Cadmium 8.67 320
Caesium 1.88 26.5
Calcium 1.54 --
Carbon, Diamond 3.50