Question 1

Which of the following best describes the difference between exponential notation and non-exponential notation when expressing significant figures in a calculation?

Accepted Answer

Exponential notation allows for clear representation of significant figures, especially in very large or small numbers.

Question 2

A patient receives a dose of medication measured in milligrams. If the prescription calls for 0.250 g, how many milligrams should the patient receive? ($$1\ \mathrm{g} = 1000\ \mathrm{mg})$$

Accepted Answer

$$250\ \mathrm{mg}$$

Question 3

Which of the following elements is most likely to form a cation with a $$+2$$ charge?

Accepted Answer

Magnesium ($$\mathrm{Mg})$$

Question 4

Which statement best explains why noble gases are generally unreactive?

Accepted Answer

Their outermost electron shell is completely filled.

Question 5

Given the chemical equation: $$2\mathrm{H}_2 + \mathrm{O}_2 \rightarrow 2\mathrm{H}_2\mathrm{O}$$, how many moles of water are produced from $$4$$ moles of hydrogen gas?

Accepted Answer

$$4$$ moles

Question 6

Which of the following molecules is polar?

Accepted Answer

$$\mathrm{NH}_3$$

Question 7

A solution is prepared by dissolving $$5.0 g of $$NaCl in enough water to make $$250 mL of $$solution. What is the molarity of the solution? ($$\mathrm{NaCl}$$ molar mass $$= 58.44\ \mathrm{g/mol})$$

Accepted Answer

$$0.34\ \mathrm{M}$$

Question 8

Which of the following best describes the effect of increasing temperature on the solubility of most solid solutes in water?

Accepted Answer

Solubility increases.

Question 9

Which of the following acids is a strong acid?

Accepted Answer

Hydrochloric acid ($$\mathrm{HCl})$$

Question 10

A buffer solution is made by mixing acetic acid and sodium acetate. What happens to the pH when a small amount of strong acid is added?

Accepted Answer

The pH decreases slightly.

Question 11

Which of the following is the correct condensed structural formula for ethanol?

Accepted Answer

$$\mathrm{CH}_3\mathrm{CH}_2\mathrm{OH}$$

Question 12

Which statement about the structure of proteins is correct?

Accepted Answer

Tertiary structure is stabilized by interactions between side chains.

Question 13

Which of the following is a monosaccharide?

Accepted Answer

Glucose

Question 14

Which of the following is the correct IUPAC name for the compound $$\mathrm{CH}_3\mathrm{CH}_2\mathrm{CH}_2\mathrm{OH}$$?

Accepted Answer

Propanol

Question 15

Which of the following statements about ATP is correct?

Accepted Answer

ATP is a nucleotide that provides energy for cellular processes.

Question 16

Which of the following is the correct formula for calculating pH from $$[\mathrm{H}^+]$$ concentration?

Accepted Answer

$$\mathrm{pH} = -\log [\mathrm{H}^+]$$

Question 17

Which of the following best describes the role of enzymes in biochemical reactions?

Accepted Answer

Enzymes act as catalysts to speed up reactions without being consumed.

Question 18

Which of the following is a correct statement about the denaturation of proteins?

Accepted Answer

Denaturation disrupts secondary, tertiary, and quaternary structures.

Question 19

Which of the following is the correct formula for the carboxyl functional group?

Accepted Answer

$$-\mathrm{COOH}$$

Question 20

Which of the following statements about fatty acids is correct?

Accepted Answer

Saturated fatty acids have no double bonds between carbon atoms.

CHEM 1510 - 41725 Final Exam Topic List: Comprehensive GOB Chemistry Study Guide

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