what word is best to substitute for the underlined words in the following sentence the nurse left the room to look for the paperwork the nurse had mis
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HESI A2

HESI A2 Grammar Practice Exam

1. What word is best to substitute for the underlined words in the following sentence? The nurse left the room to look for the paperwork she had misplaced.

Correct answer: A

Rationale: The word 'her' is the best substitute for the underlined words 'the nurse' in the sentence. This substitution avoids redundancy and provides clarity by referring back to the nurse as a third-person singular pronoun, maintaining coherence and avoiding ambiguity. 'He' (choice B) and 'his' (choice C) are incorrect as they do not align with the gender of the nurse in the sentence. 'It' (choice D) is also incorrect as it does not refer appropriately to a person.

2. A salt solution has a molarity of 5 M. How many moles of this salt are present in 0 L of this solution?

Correct answer: A

Rationale: Molarity is defined as the number of moles of solute per liter of solution. A molarity of 5 M indicates there are 5 moles of salt in 1 liter of the solution. Since the volume of the solution is 0 liters, multiplying the molarity by 0 liters results in 0 moles of salt (5 moles/L x 0 L = 0 moles). Therefore, the correct answer is 0. Option B, 1.5, is incorrect because it doesn't consider the volume being 0 liters. Options C and D, 2 and 3 respectively, are also incorrect as they do not account for the zero volume of the solution. Hence, there are no moles of salt present in 0 liters of the solution.

3. As cattle graze, cattle egrets consume the insects they stir up. This is an example of ___________.

Correct answer: C

Rationale: Commensalism is a relationship between two species in which one benefits without affecting the other species. In this scenario, the cattle egrets benefit from the insects stirred up by cattle while the cattle are not significantly impacted by the presence of the egrets. The egrets obtain food easily, and the cattle are neither harmed nor helped by the egrets' presence, making it an example of commensalism. Mutualism involves both species benefiting, parasitism involves one species benefiting at the expense of the other, and competition involves both species being negatively affected by their interactions, none of which apply to the relationship between cattle and cattle egrets in this context.

4. Which word is used incorrectly in the following sentence? Follow the instructions you received in your packet.

Correct answer: C

Rationale: The word 'your' is used incorrectly in the sentence. The word 'your' is the possessive form that shows ownership, while 'you're' is a contraction of 'you are.' In this context, 'your' should be used to indicate that the packet belongs to the person. The correct sentence should be 'Follow the instructions you received in your packet.' The other choices ('Follow,' 'instructions,' and 'packet') are all used appropriately in the sentence and do not need any corrections.

5. Convert this military time to regular time: 1310 hours.

Correct answer: D

Rationale: In military time, 1310 hours is equivalent to 1:10 P.M. However, in regular time, the conversion should have a colon between the hour and minutes, so the correct conversion is 1:31 P.M. Choice A (1:10 A.M.) and Choice C (1:31 A.M.) are incorrect as they both represent A.M. hours, while 1310 hours is in the afternoon (P.M.). Choice B (1:10 P.M.) is incorrect as it represents the hour correctly but lacks the accurate minutes representation.

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