Part D Scientists have done careful and repeated experiments to determine enthalpy changes for many different chemical reactions. The accepted reaction enthalpies for the chemical reactions in tasks 1 through 3 are given in the table. Compare your experimentally determined reaction enthalpies from these tasks with the accepted enthalpies. Are your results similar to or different from the accepted values? What may have contributed to any differences? Reaction Accepted Reaction Enthalpy, AH CuSO4 + 5H20 = CuSO4.5H2O -78,000 J/mol Zn + CuSO4 = Cu + ZnSO4 -217,000 J/mol H3C6H507 + 3NaHCO3 = Na3C6H507 + 3C02 480,000 J/mol + 3H20​

During which time interval does the object travel approximately 10 meters

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.