Chemical Education Today
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Corrections Equation 6 in the article “Three-Dimensional Representations of Surface Spherical harmonics and Their Squares Using Normal Projections: Some Comments on the Functions (Kiralj, R. J. Chem. Educ. 1998, 75, 332–338) was incorrect as printed. The correct version of equation 6 is: Yl m θ , ϕ = Θl m θ Φm ϕ Θ l m θ = p l mN l Φm ϕ =
m
1 ⋅e 2π
Pl
m
cos θ
Nl m =
l – m ! 2l + 1 ⋅ 2π l + m !
imϕ
In a recent article on the kinetics of consecutive reactions (1), I made a statement to the effect that first-order, zerothorder consecutive reactions had not been treated in the literature, especially textbooks. That statement was in error. Quite by accident, I found a paper (2) by G. V. Calder of Iowa State University that did treat such a case. “The Time Evolution of Drugs in the Body” treats several kinetic scenarios, including the first-order, zeroth-order adsorption and processing of ethanol by the body. My apologies for the omission. Interested persons should consult that reference for a more complete treatment of the application of chemical kinetics to human biochemistry. Literature Cited
vvv Reference 2 in the article “Nucleophilic Addition vs Substitution: A Puzzle for the Organic Laboratory” (Silversmith, E. F. J. Chem. Educ. 1998, 75, 221) was incorrectly stated. The correct reference is: 2. Brockwell, J. C.; Holmquist, C. R. J. Chem. Educ. 1992, 69, 68– 69.
1. Ball, D. W. J. Chem. Educ. 1998, 75, 917– 919 2. Calder, G. V. J. Chem. Educ. 1974, 51, 19–22 David W. Ball Department of Chemistry Cleveland State University Cleveland, OH 44115
[email protected] JChemEd.chem.wisc.edu • Vol. 75 No. 11 November 1998 • Journal of Chemical Education
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