Graph the relation {(-2, 2), (-1, 1), (0, 1), (1, 1), (2, 0)}. Is the relation a function?

Consider the following reactions: $\mathrm { H } _ { 2 } ( g ) + \mathrm { I } _ { 2 } ( g ) \rightleftharpoons 2 \mathrm { HI } ( g ) \quad \text { and } \quad \mathrm { H } _ { 2 } ( g ) + \mathrm { I } _ { 2 } ( s ) \rightleftharpoons 2 \mathrm { HI } ( g )$ List two property differences between these two reactions that relate to equilibrium.

State the first step in solving each equation.

$$2 b + 9 = 3$$

Solve each equation on the interval

$$[0, 2\pi).$$

Use exact values where possible or give approximate solutions correct to four decimal places.

$$\tan x = 2 \cos x \tan x$$

Use a calculator or CAS to evaluate the following integrals. [T] $\int_{0}^{1} x \cdot e^{-x^{2}} d x$

A classical example of the Poisson distribution involves the number of deaths caused by horse kicks to men in the Prussian Army between 1875 and 1894. Data for 14 corps were combined for the 20-year period, and the 280 corps-years included a total of 196 deaths. After finding the mean number of deaths per corps-year, find the probability that a randomly selected corps-year has the fo llowing numbers of deaths: 0. The actual results consisted of these frequencies: 0 deaths (in 144 corps-years); l death (in 91 corps-years); 2 deaths (in 32 corps-years); 3 deaths (in 11 corps-years); 4 deaths (in 2 corps-years). Compare the actual results to those expected by using the Poisson probabilities. Does the Poisson distribution serve as a good tool for predicting the actual results?

Multiply. Simplify your answer.

$$\frac { a ^ { 2 } } { a } \left( a ^ { 2 } + 10 a + 25 \right)$$

Find dy/dx using the method of logarithmic differentiation.

$$y=x^{sinx}$$

$$( 80 \div 40 ) - ( 8 \div 4 )$$

How much electrical energy is transferred to thermal energy in 2.00 h by an electrical resistance of 400 Ω when the potential applied across it is 90.0 V?

A voltaic cell utilizes the following reaction:

$$\mathrm { Al } ( s ) + 3 \mathrm { Ag } ^ { + } ( a q ) \longrightarrow \mathrm { Al } ^ { 3 + } ( a q ) + 3 \mathrm { Ag } ( s )$$

What is the effect on the cell emf of each of the following changes? A solution of

$$AgNO_3$$

is added to the cathode half-cell, increasing the quantity of

$$Ag^+$$

but not changing its concentration.

Find parametric equations of the line. The line through (0, 2, 1) and (2, 0, 2)

Solve each equation.

$$8y=112$$

Graph the function y = ½x² + 1