Q: A patient in a hospital receives oxygen from a tank at 2.0 atm and 300 K. If the tank contains 10.0 L of oxygen, how many moles of oxygen are present? (Use $$R = 0.0821 \; L \cdot atm / mol \cdot K)$$

$$n = \dfrac{P V}{R T} = \dfrac{2.0 \times 10.0}{0.0821 \times 300} \approx 0.81 \; mol$$

Q: A nurse needs to prepare a saline solution by dissolving 0.9 g of NaCl in enough water to make 100 mL of solution. What is the molarity of the solution? ($$M_{NaCl} = 58.44 \; g/mol)$$

$$M = \dfrac{0.9 \; g}{58.44 \; g/mol \times 0.1 \; L} \approx 0.154 \; M$$

Q: A balloon filled with helium at 1.0 atm and 300 K has a volume of 2.5 L. If the temperature increases to 400 K at constant pressure, what will be the new volume?

$$V_2$$ = $$V_1$$ \dfrac{$$T_2$$}{$$T_1$$} = 2.5 \times \dfrac{400}{300} = 3.33 \; L$$

Question 1

Which of the following best describes the primary objective of CHEM 1120 for Health Sciences majors?

Accepted Answer

To introduce students to fundamental principles of general chemistry as they relate to allied health professions.

Question 2

Which of the following is a characteristic property of ionic compounds?

Accepted Answer

They are generally soluble in water and conduct electricity when dissolved.

Question 3

Which equation correctly relates pressure, volume, and temperature for a fixed amount of gas?

Accepted Answer

$$P V = n R T$$

Question 4

A patient in a hospital receives oxygen from a tank at 2.0 atm and 300 K. If the tank contains 10.0 L of oxygen, how many moles of oxygen are present? (Use $$R = 0.0821 \; L \cdot atm / mol \cdot K)$$

Accepted Answer

$$n = \dfrac{P V}{R T} = \dfrac{2.0 	imes 10.0}{0.0821 	imes 300} \approx 0.81 \; mol$$

Question 5

Which of the following best explains why ionic compounds tend to have high melting points?

Accepted Answer

The electrostatic attraction between oppositely charged ions is very strong, requiring more energy to break.

Question 6

A nurse needs to prepare a saline solution by dissolving 0.9 g of NaCl in enough water to make 100 mL of solution. What is the molarity of the solution? ($$M_{NaCl} = 58.44 \; g/mol)$$

Accepted Answer

$$M = \dfrac{0.9 \; g}{58.44 \; g/mol 	imes 0.1 \; L} \approx 0.154 \; M$$

Question 7

Which statement correctly describes the formation of an ionic bond?

Accepted Answer

An ionic bond forms when one atom donates electrons to another, resulting in oppositely charged ions that attract each other.

Question 8

A balloon filled with helium at 1.0 atm and 300 K has a volume of 2.5 L. If the temperature increases to 400 K at constant pressure, what will be the new volume?

Accepted Answer

$$V_2$$ = $$V_1$$ \dfrac{$$T_2$$}{$$T_1$$} = 2.5 	imes \dfrac{400}{300} = 3.33 \; L$$

Question 9

Which of the following is NOT a requirement for success in CHEM 1120 according to the syllabus?

Accepted Answer

Attending laboratory sessions every week.

Question 10

Which browser is NOT recommended for accessing course materials on Canvas according to the syllabus?

Accepted Answer

Internet Explorer

Question 11

A student mixes 50 mL of 0.2 M HCl with 50 mL of 0.2 M NaOH. What is the final pH of the solution?

Accepted Answer

pH = 7, because the acid and base neutralize each other.

Question 12

Which of the following is a correct statement about academic integrity in CHEM 1120?

Accepted Answer

Plagiarism and cheating are strictly prohibited and may result in disciplinary action.

Question 13

Which formula is used to calculate the average of two exam scores and a final exam score, weighted 40% for each exam and 20% for the final?

Accepted Answer

$$	ext{Course Average} = (	ext{Exam 1} + 	ext{Exam 2}) 	imes 0.4 + 	ext{Final Exam} 	imes 0.2$$

Question 14

Which of the following best describes the role of Canvas in CHEM 1120?

Accepted Answer

Canvas is the primary platform for distributing course materials, announcements, and assignments.

Question 15

A student is absent for a scheduled exam due to illness. According to the syllabus, what is the most appropriate action?

Accepted Answer

Contact the instructor as soon as possible and provide documentation for the absence.

Question 16

Which of the following is a correct statement about the use of technology in CHEM 1120?

Accepted Answer

A personal computer or mobile device is required to access online homework and course materials.

Question 17

Which of the following is a correct application of the gas laws in a medical scenario?

Accepted Answer

Decreasing the volume of a gas in a syringe will increase its pressure, as described by Boyle's Law.

Question 18

Which of the following is NOT a characteristic of a scientific approach as described in the course objectives?

Accepted Answer

Accepting information without evidence.

CHEM 1120 Health Sciences – Syllabus and Course Policies

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