Calculate the pH of the following given the molar hydrogen ion concentration.

coffee, $\left[\mathrm{H}^{+}\right]=0.00001 \mathrm{M}$

An acid is any substance that forms ____ in water. A. hydroxide ions. B. oxygen ions. C. hydrogen ions. D. sodium ions.

Write the balanced chemical equation for the following reaction: sodium metal reacts with water to produce sodium hydroxide and hydrogen gas.

How does antidiuretic hormone affect how concentrated urine becomes?

In a Works Cited list, in what order are the entries listed? A. Alphabetically by the title of the work B. Alphabetically by the author's last name (when known) C. Alphabetically by the URL D. Chronologically by the date the source was accessed

Suppose we define the similarity and merge functions by:

1. Records are similar if in all fields, or in all but one field, either both records have the same value or one has NULL.
2. Merge records by letting each field have the common value if both records agree in that field or have value NULL if the records disagree in that field. Note that NULL disagrees with any nonnull value.

Show that these similarity and merge functions have the ICAR properties.

he standard reduction potential for the reaction $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}(a q)+\mathrm{e}^{-} \longrightarrow\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}(a q)$ is about 1.8 V. The reduction potential for the reaction $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}(a q)+\mathrm{e}^{-} \longrightarrow\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}(a q)$ is +0.1 V. Calculate the cell potentials to show whether the complex ions, $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$ and/or $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}$, can be oxidized to the corresponding cobalt(III) complex by oxygen.

A hydrogen atom in the $n=2$ state absorbs a photon with wavelength $656 \mathrm{~nm}$. Find the change in (a) the atom's total energy.

An electron is in an $\ell = 3$ state of the hydrogen atom. What possible angles might the angular momentum vector make with the z-axis?

An electric slot car travels at a scale speed of 200 mi/h, meaning this would be its speed if it were full-size. If the car is $\frac{1}{87}$ of full size, find the car's actual speed in

a. Feet per minute. b. Centimeters per second.

The hydrogen at C-1 of 1-butyne is much more acidic than the one at C-1 in 1-butene. Explain.

State whether an aqueous solution of each of the following substances conducts an electric current. Explain your reasoning.
(b) Hydrogen iodide

Identify the following processes as hydrogenation, hydrolysis, or saponification and give the products: the reaction of corn oil and hydrogen ($H_2$) with a nickel catalyst

Which is not an SI base unit of measurement? (A) kilogram (B) second (C) kilometer (D) meter