Write equilibrium constant expression for the following reaction N$_2$(g) + 3H$_2$ $\rightleftharpoons$ 2NH$_3$(g)

Leamos/Escribamos El señor Calderón cree que todo era mejor en su época. Termina sus quejas con una descripción de cómo era su vida cuando era joven. Usa el articulo si es necesario.

Ya no se puede caminar por las calles de noche. Antes eran menos ___________.

Suppose points A and B were stretched away from the figure until the acute angles were decreased to 30$^{\circ}$, as shown in the figure. Would the total area increase or decrease? Prove your answer.

A professor teaching a large lecture class of 350 students samples her class by rolling a die. Then, starting with the row number on the die (1 to 6), she passes out a survey to every fourth row of the large lecture hall. She says that this is a Simple Random Sample because everyone had an equal opportunity to sit in any seat and because she randomized the choice of rows. What do you think? Be specific.

Choose the correct answer: $\frac{d}{d x} \ln f(x)=$ a. $\frac{f(x)}{f^{\prime}(x)}$ b. $\frac{f^{\prime}(x)}{f(x)}$ c. $\frac{f^{\prime}(x)}{f^{\prime}(x)}$

Find the first four terms as well as the tenth term of the sequence with the given $n$th term.

$$a_n=(-1)^n \frac{2^n}{n}$$

A.P. is an 8-year-old who is sent to the nurse's office because she has had a 2-day history of scratching her head so badly that she complains that her "head hurts." You complete a general examination of A.P.'s head and notice that she has red, irritated areas with several scratch marks; a few open sores; and sesame seed-sized, silvery-white, and yellow nodules (bugs) that are adhered to many of her hair shafts. You determine that A.P. has pediculosis capitis.

Ten days later, A.P.'s mother calls you and states, "I think she has lice again! We worked so hard to get rid of them and clean everything. Is there something else we can use to treat her? What do we do now?" A.P.'s pediatrician prescribes spinosad (Natroba) at this time. You will provide teaching to A.P.'s mother. Which statements are correct? Select all that apply, and correct the ones that are incorrect.

a. Apply Natroba to wet hair. b. Shake the bottle before using. c. Leave it on the scalp without rinsing for 24 hours. d. An adult needs to apply the medication to A.P.'s scalp. e. A second treatment, if needed, may be applied in 1 week. f. After the medication is washed off, use a fine-tooth comb to remove treated lice and nits from the hair and scalp.

Y.C. was in labor for 12 hours and gave birth vaginally to Baby H, her first child. The nurse will complete the physical assessment and observe for physiologic changes in the newborn's transition from intrauterine to extrauterine life.

Y.C. has decided to breastfeed her infant. She asks for assistance. Identify 6 important points to include in your teaching plan.

J.D., age 45, noticed a red spot on his calf after a day of yard work. It did not bother him at first, and he thought it may have been a spider bite. The next morning, he noticed that the spot had grown to the size of a nickel, and it was hardened and very painful. His wife asked him to get it checked, but he said he could take care of it, and tried to pierce it with a pocketknife he had sterilized with a match in an attempt to drain it. Nothing came out when he tried this, so he put some antibacterial ointment over it and covered it with a bandage. Two days later, he realized that the wound was draining yellowish fluid, and the skin around the wound was red and tender. He decides to see his healthcare provider (HCP), who told J.D. that he had developed cellulitis around the wound, which was infected.

J.D. is sent home with a prescription for doxycycline capsules. Two days later, the results from the cultures are reported to the HCP. J.D. is asked to go to the hospital for treatment for an MRSA infection.

Wound Culture and Sensitivity Report:

$$\begin{array}{ll}\text { Staphylococcus aureus (MRSA) } & \geq \mathbf{1 0 0 , 0 0 0} \text { colonies } \\ \text { Amoxicillin } & \mathrm{R} \\ \text { Ceftriaxone } & \mathrm{R} \\ \text { Ciprofloxacin } & \mathrm{R} \\ \text { Clindamycin } & \mathrm{R} \\ \text { Doxycycline } & \mathrm{R} \\ \text { Levofloxacin } & \mathrm{R} \\ \text { Linezolid } & \mathrm{S} \\ \text { Trimethoprim-sulfa } & \mathrm{R} \\ \text { Vancomycin } & \mathrm{R}\end{array}$$

Anaerobic Culture:

No growth after 2 days

Contact Precautions are implemented. In addition to intravenous linezolid antibiotic treatment, the HCP performs an incision and drainage procedure. Wound care is ordered every 12 hours with sterile normal saline wet-to-dry dressings. Which nursing actions are appropriate to delegate to the UAP? Select all that apply.

a. Taking vital signs b. Assessment of the wound c. Obtaining a wound culture d. Teaching about wound care e. Changing the sterile dressing f. Maintaining contact precautions

Another D-2-ketohexose, psicose, yields a mixture of allitol and altritol when reduced with ${NaBH}_4$ (see Problem 44). Determine the structure of psicose.

Problem 44:

One of the D-2-ketohexoses (see the previous problem) is called sorbose. On treatment with ${NaBH}_4$, sorbose yields a mixture of gulitol and iditol. What is the structure of D-sorbose? (Gulitol and iditol are the alditols acquired by reduction of gulose and idose.)

Previous problem:

How many D-2-ketohexoses are there? Sketch them.

The equilibrium constant, $K_c$ for the reaction $\ce{N2(g) + 3H2(g)-> 2NH3(g)}$ is $1.2\times10^2$.

a. What is the $K_c$ for the reaction $\ce{2NH3(g) ->N2(g) +3H2(g)}$?
b. What is the $K_c$ for the reaction $\ce{1/2N2(g) +3/2H2(g)->NH3(g)}$?

For the following exercise,

Use the definition of derivative $\lim _{h \rightarrow 0} \frac{f(x+h)-f(x)}{h}$ to calculate the derivative of each function.

$$f(x)=-2 x+1$$

Complete the following sentence using the imperfect form of the verb in parentheses. Follow the model.

Modelo Nosotros (ir) íbamos_______ a la escuela todos los días.

¡Mi mamá (ser)_______ muy traviesa de niña!

The equilibrium constant for the acid ionization of mercaptoethanol (HSCH$_2$CH$_2$OH) is 1.91 $\times$ 10$^{-10}$.

$$\text{HSCH}_2\text{CH}_2\text{OH}\text{(aq)} \rightarrow \text{H}^{+} + \text{SCH}_2\text{CH}_2\text{OH}^-\text{(aq)}$$

Which of the following is true regarding this equilibrium

I. The reaction is product favored

II. The reaction is reactant favored

III. Equilibrium lies far from the right

IV. Equilibrium lies far from the left

a. I and III

b. I and IV

c. II and III

d. II and IV

e. None are true, as the concentrations of reactants and products are comparable.