Determine the energy to heat three cubes (gold, aluminum, and silver), each with a volume of 10.0 cm3, from 15 °C to 25 °C. Refer to Tables 1.13 and 2.8. What do you notice about the energy needed for each? (2.5)
TABLE 1.13 Densities of Some Common Substances
TABLE 2.8 Specific Heats of Some Substances
Substance | (J/g °C) | (Cal/g °C) |
Elements | ||
Aluminum, Al(s) | 0.897 | 0.214 |
Copper, Cus(s) | 0.385 | 0.0920 |
Gold, Au(s) | 0.129 | 0.0308 |
Iron, Fe(s) | 0.452 | 0.108 |
Silver, Ag(s) | 0.235 | 0.0562 |
Titanium, Ti(s) | 0.523 | 0.125 |
Compounds | ||
Ammonia, NH3(g) | 2.04 | 0.488 |
Ethanol, C2H5OH(l) | 2.46 | 0.588 |
Sodium chloride, NACL(s) | 0.864 | 0.207 |
Water, H2Ol | 4.184 | 1.00 |
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