4. A 134.0 g sample of an unknown metal is heated to 91.0°C and then placed in 125 g of water at 25.0°C. The final temperature of the water is measured at 31.0°C. Calculate the specific heat capacity of the unknown metal. Specific Heat of water is 4.18 J/g*C *

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable