Determine whether the pair of ratios forms a proportion.

$$\frac { 2 } { 5 }$$

and

$$\frac { 10 } { 25 }$$

Explain why (S)-2-butanol forms a racemic mixture when it is heated in sulfuric acid.

A survey asking students whether or not they snacked most days reports a margin of error of $5 \%$. About how many students do you think were surveyed?

Making Predictions Predict which ions cesium forms: $Cs^+$ ions or $Cs^{2+}$ ions.

Let u = (3, -4 ), v = (-7, 8), and w = (5, 5). Find the component forms of the following vectors. W + V

How does a zygote form? What happens to the zygote about four days after it forms?

State whether the following limit forms is indeterminate. Where possible, state the limit.

$$\infty + \infty$$

Ziegler Corporation reports net income of $380,000 and a weighted-average of 200,000 shares of common stock outstanding for the year. Compute the earnings per share of common stock.

What are the singular masculine, plural masculine, singular feminine and plural feminine forms of the word aquel?

Find out three recent news reports that quote percentages. In each case, describe the use of the percentage (as a fraction, to describe change, or for comparison) and explain its context.

Among the four alkanes, ethane, propane, butane, and pentane, which is capable of existing in isomeric forms?

The aldonic acid of D-glucose forms a five-membered-ring lactone. Draw its structure.

List at least five natural forms that appear chaotic that we can study using fractals.

Do you think that mandatory standards should be developed for the design of graphs of financial data that are included in annual reports and other periodic communications to investors? Why, or why not?