<Tr> <Td> 25 </Td> <Td> 1.184 </Td> </Tr> <Tr> <Td> 30 </Td> <Td> 1.164 </Td> </Tr> <Tr> <Td> 35 </Td> <Td> 1.146 </Td> </Tr> <Table> Densities of various materials covering a range of values <Tr> <Th> Material </Th> <Th> ρ (kg / m) </Th> <Th> Notes </Th> </Tr> <Tr> <Td> Helium </Td> <Td> 0.179 </Td> <Td> </Td> </Tr> <Tr> <Td> Aerographite </Td> <Td> 0.2 </Td> <Td> </Td> </Tr> <Tr> <Td> Metallic microlattice </Td> <Td> 0.9 </Td> <Td> </Td> </Tr> <Tr> <Td> Aerogel </Td> <Td> 1.0 </Td> <Td> </Td> </Tr> <Tr> <Td> Air </Td> <Td> </Td> <Td> At sea level </Td> </Tr> <Tr> <Td> Tungsten hexafluoride </Td> <Td> 12.4 </Td> <Td> One of the heaviest known gases at standard conditions </Td> </Tr> <Tr> <Td> Liquid hydrogen </Td> <Td> 70 </Td> <Td> At approx. − 255 ° C </Td> </Tr> <Tr> <Td> Styrofoam </Td> <Td> 75 </Td> <Td> Approx . </Td> </Tr> <Tr> <Td> Cork </Td> <Td> 240 </Td> <Td> Approx . </Td> </Tr> <Tr> <Td> Pine </Td> <Td> 373 </Td> <Td> </Td> </Tr> <Tr> <Td> Lithium </Td> <Td> 535 </Td> <Td> </Td> </Tr> <Tr> <Td> Wood </Td> <Td> 700 </Td> <Td> Seasoned, typical </Td> </Tr> <Tr> <Td> Oak </Td> <Td> 710 </Td> <Td> </Td> </Tr> <Tr> <Td> Potassium </Td> <Td> 860 </Td> <Td> </Td> </Tr> <Tr> <Td> Ice </Td> <Td> 916.7 </Td> <Td> At temperature <0 ° C </Td> </Tr> <Tr> <Td> Sodium </Td> <Td> 970 </Td> <Td> </Td> </Tr> <Tr> <Td> Water (fresh) </Td> <Td> 1,000 </Td> <Td> At 4 ° C, the temperature of its maximum density </Td> </Tr> <Tr> <Td> Water (salt) </Td> <Td> 1,030 </Td> <Td> </Td> </Tr> <Tr> <Td> Liquid oxygen </Td> <Td> 1,141 </Td> <Td> At approx. − 219 ° C </Td> </Tr> <Tr> <Td> Nylon </Td> <Td> 1,150 </Td> <Td> </Td> </Tr> <Tr> <Td> Plastics </Td> <Td> 1,175 </Td> <Td> Approx.; for polypropylene and PETE / PVC </Td> </Tr> <Tr> <Td> Tetrachloroethene </Td> <Td> 1,622 </Td> <Td> </Td> </Tr> <Tr> <Td> Magnesium </Td> <Td> 1,740 </Td> <Td> </Td> </Tr> <Tr> <Td> Beryllium </Td> <Td> 1,850 </Td> <Td> </Td> </Tr> <Tr> <Td> Glycerol </Td> <Td> 1,261 </Td> <Td> </Td> </Tr> <Tr> <Td> Concrete </Td> <Td> 2,000 </Td> <Td> </Td> </Tr> <Tr> <Td> Silicon </Td> <Td> 2,330 </Td> <Td> </Td> </Tr> <Tr> <Td> Aluminium </Td> <Td> 2,700 </Td> <Td> </Td> </Tr> <Tr> <Td> Diiodomethane </Td> <Td> 3,325 </Td> <Td> Liquid at room temperature </Td> </Tr> <Tr> <Td> Diamond </Td> <Td> 3,500 </Td> <Td> </Td> </Tr> <Tr> <Td> Titanium </Td> <Td> 4,540 </Td> <Td> </Td> </Tr> <Tr> <Td> Selenium </Td> <Td> 4,800 </Td> <Td> </Td> </Tr> <Tr> <Td> Vanadium </Td> <Td> 6,100 </Td> <Td> </Td> </Tr> <Tr> <Td> Antimony </Td> <Td> 6,690 </Td> <Td> </Td> </Tr> <Tr> <Td> Zinc </Td> <Td> 7,000 </Td> <Td> </Td> </Tr> <Tr> <Td> Chromium </Td> <Td> 7,200 </Td> <Td> </Td> </Tr> <Tr> <Td> Tin </Td> <Td> 7,310 </Td> <Td> </Td> </Tr> <Tr> <Td> Manganese </Td> <Td> 7,325 </Td> <Td> Approx . </Td> </Tr> <Tr> <Td> Iron </Td> <Td> 7,870 </Td> <Td> </Td> </Tr> <Tr> <Td> Niobium </Td> <Td> 8,570 </Td> <Td> </Td> </Tr> <Tr> <Td> Brass </Td> <Td> 8,600 </Td> <Td> </Td> </Tr> <Tr> <Td> Cadmium </Td> <Td> 8,650 </Td> <Td> </Td> </Tr> <Tr> <Td> Cobalt </Td> <Td> 8,900 </Td> <Td> </Td> </Tr> <Tr> <Td> Nickel </Td> <Td> 8,900 </Td> <Td> </Td> </Tr> <Tr> <Td> Copper </Td> <Td> 8,940 </Td> <Td> </Td> </Tr> <Tr> <Td> Bismuth </Td> <Td> 9,750 </Td> <Td> </Td> </Tr> <Tr> <Td> Molybdenum </Td> <Td> 10,220 </Td> <Td> </Td> </Tr> <Tr> <Td> Silver </Td> <Td> 10,500 </Td> <Td> </Td> </Tr> <Tr> <Td> Lead </Td> <Td> 11,340 </Td> <Td> </Td> </Tr> <Tr> <Td> Thorium </Td> <Td> 11,700 </Td> <Td> </Td> </Tr> <Tr> <Td> Rhodium </Td> <Td> 12,410 </Td> <Td> </Td> </Tr> <Tr> <Td> Mercury </Td> <Td> 13,546 </Td> <Td> </Td> </Tr> <Tr> <Td> Tantalum </Td> <Td> 16,600 </Td> <Td> </Td> </Tr> <Tr> <Td> Uranium </Td> <Td> 18,800 </Td> <Td> </Td> </Tr> <Tr> <Td> Tungsten </Td> <Td> 19,300 </Td> <Td> </Td> </Tr> <Tr> <Td> Gold </Td> <Td> 19,320 </Td> <Td> </Td> </Tr> <Tr> <Td> Plutonium </Td> <Td> 19,840 </Td> <Td> </Td> </Tr> <Tr> <Td> Rhenium </Td> <Td> 21,020 </Td> <Td> </Td> </Tr> <Tr> <Td> Platinum </Td> <Td> 21,450 </Td> <Td> </Td> </Tr> <Tr> <Td> Iridium </Td> <Td> 22,420 </Td> <Td> </Td> </Tr> <Tr> <Td> Osmium </Td> <Td> 22,570 </Td> <Td> </Td> </Tr> <Tr> <Th_colspan="3"> Notes: <Ol> <Li> Jump up ^ Unless otherwise noted, all densities given are at standard conditions for temperature and pressure, that is, 273.15 K (0.00 ° C) and 100 kPa (0.987 atm). </Li> <Li> ^ Jump up to: Air contained in material excluded when calculating density </Li> </Ol> </Th> </Tr> </Table>

Define density and write the formula for calculating density