Write formulas to illustrate the difference between each pair of compounds.
a. lithium sulfite and lithium sulfide
b. sodium carbonate and sodium hydrogen carbonate
c. calcium phosphate and calcium dihydrogen phosphate

Identify food sensitivities and how to handle them.

Repeat said problem for the graph $G$ in the given figure.

Why does a spinning ball curve in flight?

Each member of the truss in Fig. is a solid circular rod with diameter $d=10 \mathrm{~mm}$. Determine the axial stress $\sigma_1$ in the truss member (1) and the axial stress $\sigma_6$ in the truss member (6).

Each of the following compounds contains a metal that can exhibit more than one ionic charge. Name these compounds: $\text { (a) } \mathrm{Cr}_{2} \mathrm{O}_{3}$ $\text { (b) } \mathrm{FeCl}_{2}$ $(\mathrm{c}) \mathrm{CrO}_{3}$ $\text { (d) } \mathrm{TiCl}_{4}$ $(e) \mathrm{CoO}$ $\text { (f) } \mathrm{MoS}_{2}$

an organism that can make its own food

Find P(X = 4) if the random variable X has a Poisson distribution such that P(X = 1) = P(X = 2).

Use unit multipliers to convert:

600 cubic centimeters per minute to cubic feet per second.

A law of physics states that the intensity of sound is inversely proportional to the square of the distance $d$ from the source: $I=k / d^2$.

(a) Use this model and the equation

$$B=10 \log \frac{I}{I_0}$$

(described in this section) to show that the decibel levels $B_1$ and $B_2$ at distances $d_1$ and $d_2$ from a sound source are related by the equation

$$B_2=B_1 +20\log \frac{d_1}{d_2}$$

(b) The intensity level at a rock is $120 \ \mathrm{dB}$ at a distance $2$ m from the speakers. Find the intensity level at a distance of $10$ m.

Lady, Inc., whose fiscal year ends on December 31, designs and sells fashions for young professional women. Margaret Lutz, president of the company, fears that the forecasted profitability goals for 2014 will not be reached. She is pleased when Lady, Inc., receives a large order on December 30, 2014, from The Executive Woman, a retail chain of upscale stores for businesswomen. Lutz immediately directs the controller to record the sale, which represents 13 percent of Lady’s annual sales. At the same time, she directs the inventory control department not to separate the goods for shipment until after January 1, 2015. Separated goods are not included in inventory because they have been sold.

On December 31, 2014, the company’s auditors arrive to observe the year-end taking of the physical inventory under the periodic inventory system. How will Lutz’s actions affect Lady’s profitability in 2014? How will they affect Lady’s profitability in 2015? Were Lutz’s actions ethical? Why or why not?

The speed limit in some countries is 100 kilometers per hour. How fast is that in miles per hour?

Use the distance formula to find the distance between $(5,-2)$ and $(-3,3)$.

A microscope with an objective of focal length 1.6 mm is used to inspect the tiny features of a computer chip. It is desired to resolve two objects only 400 nm apart. What diameter objective is needed if the microscope is used in air with light of wavelength 550 nm?