a 35.0 g piece of metal wire is heated, and the temperature changes from 21 C to 52 C. The specific heat of the metal is 0.900 J/g C. How much energy was required to heat the metal? (if possible please show how)

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 an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide