Q: A student needs to calculate the number of moles in 18 grams of water ($$\text{H}_2\text{O}). $$What is the correct calculation?

$$\text{Moles} = \frac{18\ \text{g}}{18\ \text{g/mol}} = 1\ \text{mol}$$

Q: A student is asked to categorize a chemical reaction. Which of the following is an example of a decomposition reaction?

$$2\text{H}_2\text{O}_2 \rightarrow 2\text{H}_2\text{O} + \text{O}_2$$

Q: A student is analyzing a gas mixture and needs to apply Dalton's Law of Partial Pressures. Which equation should they use?

$$P_{\text{total}} = P_1$ + P_2$ + P_3$ + \ldots$$

Question 1

Which of the following best describes the primary focus of CHEM 103: Foundations of Chemistry, as outlined in the course syllabus?

Accepted Answer

An introduction to the fundamental concepts of general chemistry, including atomic structure, chemical bonding, and stoichiometry.

Question 2

According to the course outcomes, students are expected to be able to relate the properties of electromagnetic radiation to energy changes in atoms. Which equation would you use to calculate the energy of a photon given its frequency?

Accepted Answer

$$E = h \cdot f$$

Question 3

A student is asked to balance the following chemical equation: $$\_\_\_ 	ext{C}_2	ext{H}_6 + \_\_\_ 	ext{O}_2 ightarrow \_\_\_ 	ext{CO}_2 + \_\_\_ 	ext{H}_2	ext{O}. $$What are the correct coefficients (in order: C2H6, O2, CO2, H2O)?

Accepted Answer

2, 7, 4, 6

Question 4

Which of the following is NOT a required technical skill for success in this online chemistry course?

Accepted Answer

Ability to perform advanced organic synthesis in a laboratory

Question 5

A student needs to calculate the number of moles in 18 grams of water ($$	ext{H}_2	ext{O}). $$What is the correct calculation?

Accepted Answer

$$	ext{Moles} = \frac{18\ 	ext{g}}{18\ 	ext{g/mol}} = 1\ 	ext{mol}$$

Question 6

Which of the following best explains why students are required to use Respondus LockDown Browser for exams in this course?

Accepted Answer

To prevent students from accessing unauthorized materials and ensure exam integrity.

Question 7

Which of the following is a correct statement about the periodic table as expected from the course outcomes?

Accepted Answer

Elements in the same group have similar chemical properties due to similar valence electron configurations.

Question 8

A real-world application of stoichiometry is determining the amount of reactant needed to neutralize an acid spill. If 0.5 mol of $$	ext{H}_2	ext{SO}_4 is $$spilled, how many moles of $$	ext{NaOH}$$ are required for complete neutralization? (Reaction: $$	ext{H}_2	ext{SO}_4 + 2	ext{NaOH} ightarrow 	ext{Na}_2	ext{SO}_4 + 2	ext{H}_2	ext{O})$$

Accepted Answer

1.0 mol

Question 9

Which of the following best describes the relationship between frequency ($$f) $$and wavelength ($$\lambda) of $$electromagnetic radiation, as covered in the course?

Accepted Answer

$$c = f \cdot \lambda$$

Question 10

A student is asked to categorize a chemical reaction. Which of the following is an example of a decomposition reaction?

Accepted Answer

$$2	ext{H}_2	ext{O}_2 ightarrow 2	ext{H}_2	ext{O} + 	ext{O}_2$$

Question 11

Which of the following is a correct statement about the grading policy for CHEM 103?

Accepted Answer

Homework and quiz assignments make up 40% of the final grade.

Question 12

A student is analyzing a gas mixture and needs to apply Dalton's Law of Partial Pressures. Which equation should they use?

Accepted Answer

$$P_{	ext{total}} = P_1$ + P_2$ + P_3$ + \ldots$$

Question 13

Which of the following is a correct example of a student demonstrating the course outcome of 'analyzing real-world phenomena using chemistry principles'?

Accepted Answer

Explaining how salt lowers the freezing point of ice on winter roads using colligative properties.

Question 14

If a student is asked to identify the type of bond in $$	ext{NaCl}$$, which of the following is correct?

Accepted Answer

Ionic bond

Question 15

A student is asked to calculate the molarity of a solution made by dissolving 10 grams of $$	ext{NaCl} in $$enough water to make 500 mL of solution. (Molar mass of $$	ext{NaCl} = 58.44 g/$$mol)

Accepted Answer

$$0.342\ 	ext{M}$$

Question 16

Which of the following is a correct safety or academic integrity policy for CHEM 103?

Accepted Answer

All exams must be submitted based on Eastern Standard Time regardless of your location.

Question 17

A student is asked to identify the correct electron configuration for a neutral oxygen atom ($$Z=8). $$Which is correct?

Accepted Answer

$$1s^2$$ $$2s^2$$ $$2p^4$$

Question 18

Which of the following best describes the purpose of the reflection/wiki page contributions in this course?

Accepted Answer

To provide a space for students to reflect on their learning and interact with peers about course topics.

CHEM 103: Introduction to Chemistry – Syllabus and Study Guide

Guida di studio - Domande di pratica

Study guide - Flashcard