Find the change in thermal energy of a 20-kg wooden chair that warms from 15 ℃ to 30℃ if the specific heat of the wood is 700 J/(kg℃).

140,000 J
210,000 J
490,000 J
1,090,800 J

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound

Heat energy, carbon dioxide, and water are released through which process? a. photosynthesis b. depolymerization c. digestion d. cellular respiration