Q: A student wants to calculate the mass percent of oxygen in water ($$H_2O). $$Which formula should they use?

$$\text{Mass percent} = \frac{\text{mass of oxygen}}{\text{molar mass of } H_2O} \times 100\%$$

Q: A student is calculating the molar mass of carbon dioxide ($$CO_2). $$Which calculation is correct?

$$12.01\ g/mol + 2 \times 16.00\ g/mol = 44.01\ g/mol$$

Question 1

Which of the following best describes the primary objective of an introductory general chemistry course as outlined in the syllabus?

Accepted Answer

To understand the fundamental principles of major fields of chemistry and develop a foundation of basic chemistry concepts.

Question 2

A student is struggling to complete their chemistry homework on time due to a family emergency. According to the course policy, what is the best course of action for the student?

Accepted Answer

Contact the instructor as soon as possible to explain the situation and request an extension.

Question 3

Which of the following is NOT an acceptable excuse for missing an online exam according to the course policies?

Accepted Answer

A planned family vacation without prior notification.

Question 4

A student wants to calculate the mass percent of oxygen in water ($$H_2O). $$Which formula should they use?

Accepted Answer

$$	ext{Mass percent} = \frac{	ext{mass of oxygen}}{	ext{molar mass of } H_2O} 	imes 100\%$$

Question 5

If a student is caught plagiarizing on an assignment, which of the following is a possible consequence according to the syllabus?

Accepted Answer

Receiving a grade of zero for the assignment or activity.

Question 6

A student is using a scientific calculator for a chemistry exam. Which of the following features is required for the calculator according to the course materials?

Accepted Answer

It must be able to do exponential notation.

Question 7

Which of the following best describes the grading breakdown for this course?

Accepted Answer

Tests 60%, final exam 20%, homework 12%, quizzes 8%

Question 8

A student is planning to withdraw from the course after the withdrawal deadline. According to the syllabus, what is a likely consequence?

Accepted Answer

They may receive a failing grade and may not be eligible for a refund.

Question 9

Which of the following is a recommended netiquette guideline for communicating in this online chemistry course?

Accepted Answer

Be clear and specific. Use Standard English and do not abbreviate.

Question 10

A student is calculating the molar mass of carbon dioxide ($$CO_2). $$Which calculation is correct?

Accepted Answer

$$12.01\ g/mol + 2 	imes 16.00\ g/mol = 44.01\ g/mol$$

Question 11

If a student has not completed the required 'Check-Up Quiz' by August 22nd, 2023, what will happen according to the attendance policy?

Accepted Answer

They will be reported as a No Show and may be removed from the course.

Question 12

A student is preparing for the first test, which covers chapters 1-4. According to the test schedule, when should the student expect to take this test?

Accepted Answer

September 15th - September 16th

Question 13

Which of the following is a correct statement about homework deadlines in this course?

Accepted Answer

Homework due dates will not be extended, except under extenuating circumstances.

Question 14

A student is using Mastering Chemistry for the first time and does not have their access code yet. What should they do according to the course instructions?

Accepted Answer

Use the free, 2-week temporary access to Mastering Chemistry and begin assignments immediately.

Question 15

Which of the following is a correct formula for calculating the percent composition by mass of an element in a compound?

Accepted Answer

$$	ext{Percent composition} = \frac{	ext{mass of element in 1 mol of compound}}{	ext{molar mass of compound}} 	imes 100\%$$

Question 16

A student is calculating the mass percent of hydrogen in ammonia ($$NH_3). $$Given the molar mass of nitrogen is 14.01 g/mol and hydrogen is 1.01 g/mol, what is the correct mass percent of hydrogen?

Accepted Answer

$$\frac{3 	imes 1.01}{14.01 + 3 	imes 1.01} 	imes 100\% = 17.8\%$$

Question 17

Which of the following is a correct example of academic dishonesty as defined in the syllabus?

Accepted Answer

Copying answers from another student during an online exam.

Question 18

A student is using the Canvas platform for the course. Which of the following is a required technical skill according to the course materials?

Accepted Answer

Basic web-browsing skills and understanding the functions of Canvas.

Introduction to General Chemistry – Course Syllabus and Study Guide

Guida di studio - Domande di pratica

Study guide - Flashcard