Numerade

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Consider the following reaction: Fe$_2$O$_3$ (s) + CO (g) → Fe (s) + CO$_2$ (g) 3. Which of the molecules in the initial reaction are ionic? 4. If the iron has a mass number of 56 how many protons, electrons, and neutrons are present? Write the correct symbol for this isotope. 5. Write the full electron configuration for Fe. 6. Give a set of 4 possible quantum numbers for the last electron of the Fe. 7. Give a set of 4 possible quantum numbers for an electron in the 2p orbital of carbon. 8. Carbon dioxide is a greenhouse gasses, with absorbance maximum at 15 µm. Calculate the frequency and energy of this light. 9. In the initial balanced reaction a. If 2.5 g of Fe$_2$O$_3$ reacts with 2.5 g of CO how many grams of iron would be formed? b. What would be the pressure of CO$_2$ at 298 K if the gas was collected in a 1.0 L cylinder?

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During the performance of an audit, audit risk can best be described as the risk that the internal auditor … A. is not able to adequately evaluate a section due to a poor internal control system. B. may not have the expertise required to perform the specific audit. C. may not include in his/her tests any faulty documents, due to the use of sampling techniques. D. may fail to detect a significant error or weakness during the performance of the audit.

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In a Lewis Dot structure, an oxygen atom is connected to two atoms -- both by a single bond. There are two lone pairs of electrons on the oxygen atom. What is the formal charge on the oxygen atom?

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QUESTION 10 Which statement accurately describes a difference between prokaryotic and eukaryotic cells? Prokaryotic cells contain chloroplasts, while eukaryotic do not. Prokaryotic cells have a nucleus, whereas eukaryotic do not. Eukaryotic cells have membrane-bound organelles, while prokaryotic cells do not. Prokaryotic cells are generally larger than eukaryotic cells.

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In a vibrating mechanical system, what is the significance of the natural frequency? a) It is the frequency at which the system will always operate. b) It is the frequency at which the system experiences the highest amplitude of vibration. c) It is the frequency at which the damping force is maximum. d) It is the frequency at which the system remains in static equilibrium.

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Select all that apply Which of the following are true statements about diverticular disease? Multiple select question. It occurs when the inner layer of the large intestine protrude outward forming small pouches called diverticula. The presence of diverticula is called diverticulosis. It is a common GI problem that affects about half of adults over age 60 years. Diverticulosis is primarily caused by a low-fiber diet.

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Question 2 (10 marks) In the common-gate amplifier of the circuit shown in Figure 2, answer the below questions: a) Apply transistor equivalent circuit and derive an expression for the output short-circuit current ($I_{sc}$) in terms of $V_{sig}$. (7 marks) b) Based on the result obtained from part (b), derive an expression for the overall-voltage gain ($V_o/V_{sig}$). (3 marks) Ignore the body effect.

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You recently analyzed a mutual fund prospectus and learned that the annual returns over the last 5 years have been 12%, 9%, -25%, -3%, 30%. Based on only this information, if you had to give your best guess of the expected annual compound return of this funds over the next 5 years, what would it be?

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1. Fill in the blanks: The cumulative sum of all the years of deficit spending in the United States has resulted in a national debt that exceeds 20 trillion dollars.2. What is the impact of a large and growing national debt on interest rates?3. True or false: In the past several years, the United States annual budget deficit has exceeded $1 trillion.4. What factors increased the national debt significantly in the past decade?5. What are the possible solutions to high levels of U.S. deficit spending?

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1.1 Instead of using a pen and paper, the graphs could be drawn using technological tools. Name and briefly discuss any THREE tools/software. (9) 1.2 A cellphone can be used as a teaching aid in our classrooms. Describe any THREE ways that you can use a cellphone in your classroom to enhance teaching and learning. (9) 1.3 In the first unit of your study guide, we discuss the nature of mathematics. Use your own understanding of this discussion to write a paragraph where you explain how you can motivate your students to develop an interest in mathematics. (5) 1.4 There are several benefits of using the constructivist approach in the teaching and learning of mathematics. Explain how you will use this approach in your classroom in order to enjoy these benefits. Limit your discussion to five ideas. (10) 1.5 What is the difference between routine and non-routine problems? Give an example of each. (6) 1.6 What is meant by a problem-based approach in the teaching and learning of mathematics? Substantiate your answer by illustrating an example of a problem in the FET phase mathematics and indicate the teacher's role in using a problem-centred approach. (6) [45]

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ines g.