The pOH of pure water at 40 degrees Celsius is 6.8. What is the hydronium ion concentration, [H$_3$O$^+$], in pure water at this temperature?
A. 1.0x10$^{-7}$
B. 6.3x10$^{-8}$
C. 1x10$^{-14}$
D. 1.6x10$^{-7}$

Create sentences contrasting the elements given. Use the long form of possessive adjectives. Follow the model. Modelo: mi chaqueta / roja $\sim$ tu chaqueta / negra. La chaqueta mia es roja, pero la chaqueta tuya es negra. mis joyas / de plata $\sim$ sus joyas / de oro

Indite a eulogy for yourself, someone you admire, or a fictional or historical character. Let your diction and tone be fitting to a serious and formal occasion.

Pepys's descriptions of the "lamentable fire" and the "soor pigeons" typify his tone of __
A cynicism
B superiority
C disgust
D compassion

Determine the mass of pure magnesium sulfate in 2.4 grams of magnesium sulfate heptahydrate.

For the word below, add the suffix indicated.

pure (-ify)

How can competitive and pure noncompetitive inhibition be distinguished in terms of K$_M$?

Calculate the amount (moles) represented by each of the following:
$16.0 \mathrm{~g}$ of $\mathrm{Na}$ $\hspace{1cm}$(c) $0.0034 \mathrm{~g}$ of platinum

Why might an artist prefer approximate symmetry over pure symmetry?

Which word best describes the tone of this passage? A. uncertain B. amused c. angry D. scholarly

How would you describe the tone of Wollstonecraft's text? What particular words, phrases, or longer passages contribute to this tone?

Describe the speaker's tone in "When I Have Fears." Do you think the tone is constant or does it change? Explain.

Why does a pure noncompetitive inhibitor not change the observed K$_M$?

Pure water has a pH of 10 at 298 K. True or false?