A forensic specialist is examining the hard drive of a computer and has determined that the hard drive uses the HFS file system. From which type of computer did the hard drive originate?

Which conditions are consistent with a reaction that proceeds spontaneously in the forward direction?

What mass of metal X will be formed by passing {I} A through XNO3(aq) for {t} seconds? The molar mass of X is given in the Molar Mass Table at the bottom of this page. Answer format:  Enter your answer in grams but do not include the units.  Enter 2 sig figs in standard, not scientific notation.

Refer to compound #2 in the list at the bottom of this page.  Convert {X} mole fraction of compound #2 in water to mass percent. Answer format:  Enter the mass percent in standard notation without the units or a % symbol.  Use 2 sig figs.  

Use the table of Ka values found at the bottom of the page for the monoprotic acids HA, HG, HQ and HX to determine which one has the strongest conjugate base?

         Spectrophotometry is used to determine the equilibrium constant for the reaction,       Fe3+ + SCN-  à  [FeSCN]2+ by measuring the “redness” of the iron thiocyanate complex.  Given the information provided, calculate the equilibrium constant, Kc, for this reaction.                  [Fe3+]initial = 2.00 x 10-3 M                [SCN-]initial = {th} x 10-4 M                Absorbance (A) at 477 nm for [FeSCN]2+ = 0.64 Answer format:  Enter the value of Kc in standard (not scientific) notation using 3 SF.

Three mechanisms (I, II and III, at the bottom of this page) have been proposed for the overall reaction, 2J + K  à   L + M  Which of the mechanisms are consistent with the experimentally determined rate law:   rate = k[K]?

A reactant, R, is decomposing in a first-order reaction. If the initial concentration of R is {M} M, how much is left after 4.0 half-lives? 

Question on Shirley Jackson’s short story “Charles”:  What grade is Laurie in? 

Question on Shirley Jackson’s short story “The Lottery”:  What do the children gather at the start of the story?