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Unformatted text preview: in your car's lead storage battery (a solution of sulfuric acid) changes density because the sulfuric acid is consumed as the battery discharges. In a fully charged battery, the density of the solution is about 1.30 g/cm". If the density falls below 1.20 g/cnr', the battery will have to be recharged. Density measurement is also used to determine the amount of antifreeze, and thus the level of protection against freezing, in the cooling system of a car. The densities of various common substances are given in Table 1.5. Table 1.5 Densities of Various Common Substances* at 20°C Substance Physical State Density (g/cm 3 ) Oxygen Hydrogen Ethanol Benzene Water Magnesium Salt (sodium chloride) Aluminum Iron Copper Silver Lead Mercury Gold Gas Gas Liquid Liquid Liquid Solid Solid Solid Solid Solid Solid Solid Liquid Solid 0.00133 0.000084 0.789 0.880 0.9982 1.74 2.16 2.70 7.87 8.96 10.5 11.34 13.6 19.32 * At 1 atmosphere pressure....
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This note was uploaded on 12/13/2010 for the course CHEM 2301 taught by Professor Bill during the Spring '10 term at South Texas College.
- Spring '10
- Organic chemistry