Nursing Elites

1. What is the oxidation state of the nitrogen atom in the compound NH3?

• A. -3
• B. -1
• C. +1
• D. +3

Correct answer: B

Rationale: In the compound NH3, nitrogen is bonded to three hydrogen atoms. Hydrogen is always assigned an oxidation state of +1. Since the overall charge of NH3 is zero, the oxidation state of nitrogen must be -1 to balance out the hydrogen's +1 oxidation state. Therefore, the correct oxidation state of the nitrogen atom in NH3 is -1. Choice A (-3) is incorrect because it does not account for the electronegativity of hydrogen. Choice C (+1) and Choice D (+3) are incorrect as the nitrogen atom in NH3 needs to balance the +1 oxidation state of each hydrogen atom, resulting in a total of -3 to maintain the compound's charge neutrality.

2. Which verb form correctly completes the sentence? 'The shopper was angry when he realized he could have ___ it cheaper at the other store.'

• A. Get
• B. Could have got
• C. Could have gotten
• D. Might have get

Correct answer: C

Rationale: The correct answer is 'C) Could have gotten.' In this sentence, the verb form 'gotten' is the correct past participle form of 'get,' indicating a missed opportunity in the past. Choice A is incorrect because 'get' is the base form of the verb, not the past participle. Choice B is incorrect as 'got' is the past tense, not the past participle. Choice D is incorrect because 'get' is the base form, and 'might have get' is not the correct structure for this sentence.

3. Which word is NOT USED CORRECTLY in the sentence? They're going to the mall to pick up there uniforms for their coach.

• A. Their
• B. Going
• C. They're
• D. There

Correct answer: D

Rationale: The correct answer is D, 'There.' In this context, 'There' is incorrect as it should be replaced with 'their' to show possession, referring to the uniforms belonging to the team. 'Their' (choice A) is used correctly to indicate possession. 'Going' (choice B) and 'They're' (choice C) are also used correctly in the sentence.

4. What word is best to substitute for the underlined words in the following sentence? You can hear the nurses’ laughter all the way down the hallway.

• A. his
• B. hers
• C. them
• D. their

Correct answer: D

Rationale: The phrase 'the nurses’ laughter' indicates possession by the nurses, a plural subject. Therefore, the appropriate possessive pronoun to use in this context is 'their,' which correctly reflects possession by multiple nurses. Choice A ('his') is singular and refers to a male subject, not suitable for a group of nurses. Choice B ('hers') is singular and refers to a female subject, not suitable for a group of nurses. Choice C ('them') is a pronoun used for a group of people, but it doesn't indicate possession as required in the sentence.

5. What are the three types of intermolecular forces?

• A. Ionic, covalent, hydrogen
• B. Hydrogen bonding, dipole interactions, dispersion forces
• C. Van der Waals, ionic, covalent
• D. Hydrogen, Van der Waals, dispersion forces

Correct answer: B

Rationale: The three types of intermolecular forces are hydrogen bonding, dipole interactions, and dispersion forces. Option A includes ionic and covalent bonds, which are intramolecular forces, not intermolecular. Option C includes van der Waals forces, which encompass dipole interactions and dispersion forces, but also includes ionic and covalent bonds. Option D is close but misses dipole interactions, which are distinct from hydrogen bonding and dispersion forces. Therefore, option B is the correct choice as it includes the three specific types of intermolecular forces.

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