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Sulfur is an element important in biology. What is the ground state electron configuration of a neutral sulfur atom?  Format your answer with a space between each subshell (e.g. 1s2 2s2) (WCSU24)

(WCSU24) Each of the following transitions is from a different series (i.e. Balmer, Lyman, etc.) of emission lines from the hydrogen atom. NO CALCULATIONS ARE NECESSARY!  🙂 a.   n = 10 to n = 5 b.   n = 5 to n = 2 c.   n = 3 to n = 2 d.   n = 2 to n = 1   i.  Which transition will be the smallest change in energy?  [drop1] ii.  Which transition will have the shortest wavelength?  [drop2]

(WCSU24) Shown below are five curves that represent the distribution of molecular speeds of five different gases at the same temperature and pressure, each in a separate 10 L container. The gases are H2, CH4, He, SF6, and N2. Complete the statements so that they are true.   a. The gas represented by [drop1] has the largest fraction of molecules traveling at the most probable speed. b. Curve [drop2] corresponds to N2. c.  All of the gases represented have the same [drop3]. d.  Gas [drop4] has the greatest density. e.  Increasing the speed of the molecules will [drop5] the pressure.

(WCSU24) Arrange the following in order of increasing….         smallest/lowest –> largest/highest Example:  Radius Cs Rb Li Li             Rb           Cs Atomic radius P Mg F [drop1] < [drop2] < [drop3] Bond strength C=C C-C C≡C [drop4] < [drop5] < [drop6] Melting point NaCl CH4 H2O [drop7] < [drop8] < [drop9] Ionization energy Cl P Na [drop10] < [drop11] < [drop12] Bond angle HCN NH3 H2O [drop13] < [drop14] < [drop15] Bond polarity C-F C-N C-H [drop22] < [drop23] < [drop24] Energy 3s 2s 3p [drop16] < [drop17] < [drop18] Energy UV light X-rays micro waves [drop19] < [drop20] < [drop21]  

22.  (WCSU24.[x], 8 points) You are designing a new brand of hot pack using CaCl2 and water. The thermochemical equation of the dissolution process is shown below.   CaCl2(s)      

(WCSU24) Select all functional groups present in the structure of the drug.  

(WCSU24) Fill in the following table with the appropriate number of protons, neutrons, and electrons (enter a number only).     Protons Neutrons Electrons 48Ti+4 [blank1] [blank2] [blank3] 35Cl- [blank4] [blank5] [blank6]

(WCSU24) Rank the molecules (a, b, and c) in order of increasing carbon-oxygen bond length.    shortest   [blank1]

(WCSU24) Select the appropriate word that makes each sentence true. a. Melting is [drop2]. b. Intermolecular forces occur [drop9] molecules.  c. When intermolecular interactions are broken, energy is [drop1].   d. The energy absorbed when liquid water vaporizes is [drop3] than the energy absorbed when ice (solid water) melts.  e.   A temperature decrease is observed when NH4Cl is dissolved in water.  We can conclude that the total intermolecular interactions formed between solute and solvent are [drop5] than those broken.  f. As temperature of a substance increases, kinetic energy [drop8]. g. The

(WCSU24) Below is the structure of glutathione, a powerful antioxidant produced in the liver that plays a role in removing free radicals that can cause cell damage.  Identify the formal charges on the atoms A-D.  All the lone pairs are drawn in for you.  Labeled Atom Formal Charge A [blank1] B [blank2] C [blank3] D [blank4] , Periodic Table