Identify any formal charges in the following structures:

Introductory Chemistry 5
Is the precipitate in a precipitation reaction always a compound that is soluble or insoluble? Explain.

Chemistry 11
The molar mass of caffeine is 194.19 g. Is the molecular formula of caffeine \(\mathrm{C}_4\mathrm{H}_5\mathrm{N}_2\mathrm{O}\) or \(\mathrm{C}_8\mathrm{H}_{10}\mathrm{N}_4\mathrm{O}_2\)?

Biology: The Dynamics of Life 1
How does ATP store energy?

Campbell Biology 10
Unlike eutherians, both monotremes and marsupials a. lack nipples. b. have some embryonic development outside the uterus. c. lay eggs. d. are found in Australia and Africa

Krugman's Economics for AP® (High School) 2
In each of the following cases, state whether the income effect, the substitution effect, or both are significant. In which cases do they move in the same direction? In opposite directions? Why? a. Orange juice represents a small share of Clares spending. She buys more lemonade and less orange juice

Principles of Economics 6
Consider a monopolistically competitive market with N firms. Each firms business opportunities are described by the following equations: Demand: Q = 100/N P Marginal Revenue: MR = 100/N 2Q Total Cost: TC = 50 + Q2 Marginal Cost: MC = 2Q a. How does N, the number of firms in the market, affect each

Sensation and Perception 10
Texture gradients are said to provide information for depth perception because elements in a scene become more densely packed as distance increases. The examples of texture gradients in Figures 10.6 and 10.8 contain regularly spaced elements that extend over large distances. But regularly spaced elem

Chemistry for today : general, organic, and biochemistry 9
Write a formula for the conjugate base formed when each of the following behaves as a Brnsted acid: a. \(\mathrm{HSO}_{4}^{-}\) b. \(\mathrm{CH}_{3} \mathrm{NH}_{3}{ }^{+}\) c. \(\mathrm{HClO}_{4}\) d. \(\mathrm{NH}_{4}{ }^{+}\) e. HCl