A piece of gold has a mass of 20 g. If this gold were formed into a very thin sheet of thickness 0.50 mm, find the area of the sheet. Assume it has the same density as listed in Table 10.1.

 

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TABLE 10.1 Densities of Some Common Solids, Liquids, and Gases Density (kg/m) Substance SOLIDS Ice (at 0°C) Aluminum 917 2,700 Lead 11,300 Platinum 21,500 Gold 19,300 Tungsten 19,300 Steel 7,800 Concrete 2,000 Bone 1,500-2,000 Polystyrene 100 Glass 2,500 Wood (spruce) Wood (balsa wood) 400 120 Wood (oak) 750 LIQUIDS Water (0°C) 999.8 Water (4°C) 1,000.0 Water (20°C) 999.9 Seawater 1,025 Ethanol 790 13,600 Mercury Oil 700-900 GASES Air (0°C) 1.29 Air (20°C) 1.20 Air (100°C) 0.84 Helium (0°C) 0.18 Hydrogen (0°C) 0.090 Carbon dioxide (25°C) 1.80