The nurse is reviewing the medication history of a patient who is taking hydroxychloroquine. However, the patient’s chart does not reveal a history of malaria or travel out of the country. The patient is most likely taking this medication for what
a. Plasmodium.
b. thyroid disorders.
c. roundworms.
d. rheumatoid arthritis.

The chemical factors that determine traits are called

a. chromosomes.

b. genes.

c. traits.

d. characters.

In contrast, a merchandiser's cost of goods sold is based on its __________.

Consider the following data:

$$\begin{array}{llr} \hline \text { Variable selling and administrative costs per unit } & \$ 7.00 \\ \text { Total fixed selling and administrative costs } & \$ 810,000 \\ \text { Total fixed manufacturing costs } & \$ 500,000 \\ \text { Variable manufacturing costs per unit } & \$ 12.00 \\ \text { Units produced and sold } & 100,000 \\ \hline \end{array}$$

Compute the following per unit of product: (c) full cost.

(a) For $^{18} O_{2}, \Delta \overline{G}$ values for the transitions $v=1 \leftarrow 0, 2 \leftarrow 0,$ and $3 \leftarrow 0$ are, respectively, 1556.22, 3088.28, and $4596.21\ \mathrm{cm}^{-1}.$ Calculate $\overline{v}$ and $x_{e}.$ Assume $y_{e}$ to be zero. (b) For $^{14} N_{2}, \Delta \overline{G}$ values for the transitions $v=1 \leftarrow 0, 2 \leftarrow 0,$ and $3 \leftarrow 0$ are, respectively, 2345.15, 4661.40, and $6983.73\ \mathrm{cm}^{-1}.$ Calculate $\overline{v}$ and $x_{e}.$ Assume $y_{e}$ to be zero.

Graph each function. Based on the graph, state the domain and the range and find any intercepts.

$$f(x)=\left\{\begin{array}{ll}{\ln x} & {\text { if } 0<x<1} \\ {-\ln x} & {\text { if } x \geq 1}\end{array}\right.$$

A sample of air with a mole ratio of $\mathrm{N}_2$ to $\mathrm{O}_2$ of $79: 21$ is heated to $2500 \mathrm{~K}$. When equilibrium is established in a closed container with air initially at $1.00 \mathrm{~atm}$, the mole percent of $\mathrm{NO}$ is found to be $1.8 \%$. Calculate $K_p$ for the reaction below, assuming pressures are expressed in atmospheres.

$$\mathrm{N}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}(\mathrm{g})$$

Calculate whether or not a precipitate will form in the following mixed solutions:

(a) $100 \mathrm{~mL}$ of $0.010~M\mathrm{~Na}_2 \mathrm{SO}_4$ and $100 \mathrm{~mL}$ of $0.001~M\mathrm{~Pb}\left(\mathrm{NO}_3\right)_2$
(b) $50.0 \mathrm{~mL}$ of $1.0 \times 10^{-4}~M\mathrm{~AgNO}_3$ and $100 . \mathrm{mL}$ of $1.0 \times 10^{-4}~M\mathrm{~NaCl}$
(c) $1.0 \mathrm{~g} \mathrm{~Ca}\left(\mathrm{NO}_3\right)_2$ in $150 \mathrm{~mL} \mathrm{~H}_2 \mathrm{O}$ and $250 \mathrm{~mL}$ of $0.01~M\mathrm{~NaOH}$\

$$K_{\text {sp }} \mathrm{PbSO}_4=1.3 \times 10^{-8}$$

$$K_{\mathrm{sp}} \mathrm{AgCl}=1.7 \times 10^{-10}$$

$$K_{\mathrm{sp}} \mathrm{Ca}(\mathrm{OH})_2=1.3 \times 10^{-6}$$

Find the reciprocal of the number.

-1/5

For each of the following pairs of ions, write the symbol for the formula of the compound they will form. (a) $\mathrm{Ca}^{2+}, \mathrm{S}^{2-}$ (b) $\mathrm{NH}_4^{+}, \mathrm{SO}_4^{2-}$ (c) $\mathrm{Al}^{3+}, \mathrm{Br}^{-}$ (d) $\mathrm{Na}^{+}, \mathrm{HPO}_4^{2-}$ (e) $\mathrm{Mg}^{2+}, \mathrm{PO}_4^{3-}$

Which of the following best describes inpatient drug treatment facilities?

a. They are mainly for individuals with mental or medical disorders.

b. They treat patients for 4-8 hours a day, but the patient lives at home.

c. They are long-term facilities that also provide job and career training

d. They are separate from hospitals and other medical facilities.

(Continuation of the previous Exercise) Suppose $\mathbf{r}(t)=f(t) \mathbf{i}+$ $g(t) \mathbf{j}+h(t) \mathbf{k}$ and $f, g$, and $h$ have derivatives through order three. Use the results of the Exercise discussed before to show that

$$\frac{d}{d t}\left(\mathrm{r} \cdot \frac{d \mathbf{r}}{d t} \times \frac{d^2 \mathbf{r}}{d t^2}\right)=\mathrm{r} \cdot\left(\frac{d \mathbf{r}}{d t} \times \frac{d^3 \mathbf{r}}{d t^3}\right) .$$

(Hint: Differentiate on the left and look for vectors whose products are zero.)

According to the Christian Science Monitor, 80 percent of egg cartons are imprinted with the logo "Animal Care Certified.."27 This designation means that the United Egg Producers, the egg industry's trade group, has certified egg producers according to internal guidelines.

What do you think the typical consumer interprets "Animal Care Certified" to mean?

Predict the number of vertices and faces on each closo-borane. a. $\mathrm{B}_{4} \mathrm{H}_{4}^{2-}$ b. $\mathrm{B}_{9} \mathrm{H}_{9}^{2-}$