For each sentence in the following paragraph, choose the correct word or words in parentheses.

Because more ice forms in very dry air, the (amount, number) of ice depended on the dryness of the air.

Write these numerals in words.

b. $401,002,560,300$

The mascot for Sacramento High School is the DRAGONS. (a) How many ways can the cheerleaders rearrange the letters in the school mascot? (b) How many ways can the letters be rearranged if the first and last letters are correctly placed?

Determine the values of $k$ for which $A$ is invertible.

$$A=\left[\begin{array}{ll}3 & k \\ k & 3\end{array}\right]$$

What is a buffer solution? What must a solution contain to be a buffer?

Identifying Pronoun Case and Use. Write the case of the underlined pronoun. Then write its use. I heard $\underline{him}$ quite clearly.

In earlier problem, determine the perpendicular distance from point $B$ to wire $A E$.

Determine whether or not the given sets are disjoint. For the definitions of $M, K,$ and $E$, refer to the instructions for Problems $37–40$.

$K$ and $K^\prime$

Write the name for KBrO$_2$.

In the circuit shown in Fig. the current through the $12.0-\mathrm{V}$ battery is measured to be $70.6 \mathrm{~mA}$ in the direction shown. What is the terminal voltage $V_{a b}$ of the $24.0-\mathrm{V}$ battery?

Which end of the wire is positively charged and which end is negatively charged?

Calculate the binding energy per mole of nucleons for calcium-40, and compare your result with the value in Figure 25.4. Masses needed for this calculation are (in g/mol) $^1_1$H = 1.00783, $^1_0$n = 1.00867, and $^{40}_{20}$Ca = 39.96259.

A wire of length x is bent into the shape of a circle. Express the area A of the circle as a function of x.

What chamge does doubling the diameter of a wire have on the wire's resistance?