is mgbr2 a strong electrolyte

Write equations to show how each of the following buffer solutions reacts with a small added amount of a strong acid or a strong base: (a) $\mathrm{HCOOH}-\mathrm{KHCOO}$;

The following is a set of data from a sample of n=11 items:

$$\begin{array}{rrrrrrrrrrrr}X & 7 & 5 & 8 & 3 & 6 & 10 & 12 & 4 & 9 & 15 & 18 \\ Y & 21 & 15 & 24 & 9 & 18 & 30 & 36 & 12 & 27 & 45 & 54\end{array}$$

a. Compute the covariance.

b. Compute the coefficient of correlation.

c. How strong is the relationship between X and Y ? Explain.

is nabr a strong electrolyte

Let

$$f(x)= \begin{cases}x \cot k x & \text { if } x<0 \\ x^2+c & \text { if } x \geq 0\end{cases}$$

Find the value of $c$ that will make $f$ continuous at $x=0$.

Identifying the Number of Nouns and Pronouns. Label each of the following words as singular or plural. he

Answer true or false for each of the following: A strong acid

c. has a strong conjugate base

is ch3cooh a strong electrolyte

Identifying the Number of Nouns and Pronouns. Label each of the following words as singular or plural. she

Graph by hand the standard normal distribution by using the formula derived in the Previous Exercise. Let $\pi \approx 3.14$ and $e \approx 2.718$. Use $X$ values of $-2,-1.5,-1,-0.5,0,0.5$, $1,1.5$, and $2.$ (Use a calculator to compute the $y$ values.)

Circle the letter of each characteristic of turtles and tortoises.
a. teeth $\hspace{1.4cm}$c. strong limbs
b. strong jaws $\hspace{.5cm}$d. long, broad snout

On the line provided, write each of the following words, using hyphens to show how the word could be divided at the end of a line. If a word should not be divided, write do not divide.

Example 1. frankly $\underline{\text{frank-ly}}$

plunge $\underline{\phantom{\text{The horse with the sllvery mane and white tall was chosen by the photographer.}}}$

Benito has $x$ applos. He cuts each apple in half and gives each half to a different horse. Which expression represents the number of horses Benito feeds? (A) $x \cdot \frac{1}{2}$ (C) $x=1 \frac{1}{2}$ (B) $x \div \frac{1}{2}$ (D) $x \div 1 \frac{1}{2}$

Rewrite the following sentences to correct any errors in the use of abbreviations.

Example 1. The accident occurred at 6:23 PM on Dec. 28, 1999. $\underline{\text{The accident occurred at 6:23 P.M. on December 28, 1999.}}$

10. Please have the manuscript to me by Tues., Sept. 12, 2001, at four o'clock PM. $\underline{\phantom{\text{The horse with the sllvery mane and white tall was chosen by the photographer.}}}$