The change in boiling point of water for an aqueous solution of potassium iodide (Kl) is 0.65°C. What is the molality concentration of potassium iodide? (Kb of water = .512)
-.33 m
-cannot be determined
-0.63 m
-1.02 m

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

Consider the nuclear equation below. 239 > x + 4 he 94 2 what is x? 1.235 cm 96 2.243 u 92 3.235 u 92 4.243 cm 96

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