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______________________ is defined as the distance between two successive wave peaks or troughs.  

A system delivers 235 J of heat to the surroundings while also delivering 655 J of work. Calculate the change in the internal energy,

The maximum number of electrons that can occupy a p shell is:

When a roller coaster car is at the bottom of the hill, it has 100% kinetic energy.

Label this question as Q-Wave on your paper. (8 min.) For this problem, you must show your work exactly as shown in the PPT lecture videos.  You must include the starting equations, starting variables, use correct sig figs, and circle your final answers on your paper.  You must state your final answers here on the exam with units.  Failure to follow these directions will result in significant to total point loss.  You must upload your work to the Canvas dropbox as directed in the exam directions. Consider a photon with an energy of 6.997 x 10-19 J. A)  What is the frequency of this photon in SI units? B)  What is the wavelength of this photon in nm? c = 3.00 x 108m/s; h = 6.6262 x 10-34 J s; 1 m = 1 x 109 nm State final answers here with the appropriate letter.

Of the following orbital diagrams, which one represents nitrogen, N, atomic number 7.

Ionization energy refers to the energy needed to add an electron to an atom.

  We expect an atom of Krypton (Kr) to have a larger atomic radius than an atom of Sulfur (S).

When a solid is heated to very high temperatures, it emits electromagnetic radiation known as ________________.  An example of such radiation is the burner of an electric stove top turning bright red.    

Label this question as Q-Hess on your paper. (10 min.) For this problem, you must show all your work on paper exactly as was demonstrated in the PPT lecture videos and lecture.  You must label each step of your work clearly, use correct sig figs, and circle your final answer  on your paper.  You must state your final answer for the heat of reaction (do not need to write equation) here on the exam with units.  Failure to follow these directions will result in significant to total point loss.  You must upload your work to the Canvas dropbox as directed in the exam directions. B2H6(g) + 6 Cl2(g)