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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.

Locate atom “a)” in the Atomic mass table at the bottom of the page.  Calculate the nuclear binding energy (in J/atom) for atom a). Answer format:   The answer will be in the form:  ___ x 10-12 J.  Only type the part that goes in the blank. Do not type “x 10-10 J”.  Round to 2 sig figs, do not round until the end of the calculation.

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.  

Please use rate 3 in the data at the bottom of this page. For the reaction,   2J + 3K + Là 5M + 7N, if the concentration of K is decreasing at rate 3, what is the rate of increase of [M]?  

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? 

Identify the missing information in the following radioactive decay series.  Matches may be used multiple times or not used at all.

All of the answers are true except one.  Which of the answers is FALSE regarding perturbations to a chemical reaction at equilibrium of the form: A(aq) + 3B(g)  2D(aq)        ∆H = 126 kJ/mol

         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.

Question on Shirley Jackson’s short story “The Lottery”:  Old Man Warner wishes that the town would discontinue the lottery tradition. 

Figure 12.1 Multipolar neuron. Reference: Figure 12.1 In Figure 12.1, identify number 4.