Absent-minded Alfred put down a bottle containing silver on the table. When he went to retricve it, he realized he had forgotten to label the bottle. Unfortunately, there were two full bottles of the same size side-by-side. Alfred realized he had placed a bottle of mercury on the same table last week. State two ways Alfred can determine which bottle contains silver without opening the bottles.

An element is a solid at room temperature. It can be a (1) metal only (2) metalloid only (3) metal or a nonmetal only (4) metal, a metalloid, or a nonmetal

Choose the correct verb.

Witnesses had (swear, swore, sworn) to tell the truth during the trial.

Once the buyer has said yes the salesperson needs to:

a. follow up to make sure the buyer is pleased with his or her purchase

b. encourage feelings of post-purchase dissonance

c. show excitement when the buyer signs the sales contract

d. surprise the buyer with unexpected product features

e. do all of the above

Which of the following features about a buyer indicates that the buyer has high bargaining power?

a) when the buyer cannot purchase specific products from other sellers.

b) when the buyer operates in an industry where products are undifferentiated.

c) when the buyer cannot credibly threaten to backwardly integrate into the industry.

d) when the buyer faces high switching costs.

Choose the correct verb.

Are you sure you have (gave, given) him the correct combination?

Here is another review of a popular movie. Correct the sentence that contain errors in subject-verb agreement. If a sentence contains no errors, write Correct.

The work of these two actors have always been of high quality.

With reference to the earlier example, what would have been the probabilities of type I and type II errors if the acceptance region had been $x>16$ and the corresponding rejection region had been $x \leqq 16$?

If Brittain had been a man, how would her sense of obligation have been different during World War I?

Is dissolving salt in water a physical or chemical change and why? How could you verify your answer?

A cube of aluminum has a mass of $500 .\mathrm{~g}$. What will be the mass of a cube of gold of the same dimensions?

The mass of a block is $9.43\mathrm{~g}$ and its density is $2.35\mathrm{~g}/\mathrm{mL}$. The volume of the block is

(a) $4.01\mathrm{~mL}$
(b) $0.249\mathrm{~mL}$
(c) $22.2\mathrm{~mL}$
(d) $2.49\mathrm{~mL}$

Consider a sealed container half-filled with water. Do the statement below describes what occurs in the container? Explain and justify your answer. If it is incorrect, explain why.

The water does not evaporate, because the container is sealed.

An object has a mass of $62\mathrm{~g}$ and a volume of $4.6\mathrm{~mL}$. Its density is

(a) $0.074\mathrm{~mL}/\mathrm{g}$
(b) $285\mathrm{~g}/\mathrm{mL}$
(c) $7.4\mathrm{~g}/\mathrm{mL}$
(d) $13\mathrm{~g}/\mathrm{mL}$