(a) Draw the resonance forms of benzene, cyclobutadiene,

Organic Chemistry 2
As part of a study on cyclopropane derivatives of fatty acids, the following amide was subjected to mass spectrometric analysis (J. Org. Chem. 1977, 42, 126129). The most abundant peak in the spectrum was found at m/z = 113. Suggest a reasonable structure and mechanism of formation for the ion consis

Physics: Principles with Applications 7
If 720-nm and 660-nm light passes through two slits 0.62 mm apart, how far apart are the second-order fringes for these two wavelengths on a screen 1.0 m away?

Chemistry: The Molecular Nature of Matter and Change - Standalone book 7
Calculate the molar mass of each of the following: (a) Sr(OH)2 (b) N2O3 (c) NaClO3 (d) Cr2O3

Human Anatomy & Physiology 9
Match the names of the cranial nerves in column B to the appropriate description in column A. Column A ____ (1) causes pupillary constriction ____ (2) the major sensory nerve of the face ____ (3) serves the sternocleidomastoid and trapezius muscles ____ (4) purely sensory (two nerves) ____ (5) serves

Human Biology 11
Define the difference between (a) gene and allele, (b) dominant allele and recessive allele, (c) homozygote and heterozygote, and (d) genotype and phenotype.

Psychology 12
What is the course of prenatal development, and how do teratogens affect that development?

Urban Economics 8
Teacher Isoquant and Cost Minimization Consider a teacher isoquant, which shows different input combinations that produce a target quantity of output. Suppose the inputs for teacher productivity are graduate course work (on the horizontal axis, ranging from 0 to 10 years) and verbal ability (on the v

Biochemistry 9
It is possible for the codons for a single amino acid to have the first two bases in common and to differ in the third base. Why is this experimental observation consistent with the concept of wobble?