what is the correct name of agno
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HESI A2

Chemistry HESI A2 Practice Test

1. What is the correct name of AgNO₃?

Correct answer: D

Rationale: The correct name for AgNO₃ is silver nitrate. In chemical nomenclature, the element symbol Ag represents silver, and the polyatomic ion NO₃ is known as nitrate. Therefore, when the silver ion (Ag⁺) combines with the nitrate ion (NO₃⁻), the resulting compound is named silver nitrate (AgNO₃). Choices A, B, and C are incorrect because they do not accurately represent the composition of AgNO₃. Argent nitrous (Choice A) and Argent oxide (Choice B) do not reflect the correct anion, and Silver nitrite (Choice C) uses a different anion altogether.

2. What does the word 'suit' mean in the passage about Bridge?

Correct answer: B

Rationale: The correct answer is B: 'Any of the four sets into which a deck of cards is divided.' In the context of card games like Bridge, 'suit' refers to one of the four divisions of a deck of cards - spades, hearts, diamonds, or clubs. Each suit contains cards of different ranks, and during the game, players must follow suit if possible, meaning they must play a card of the same suit that was led. This is crucial for understanding card hierarchy and gameplay in Bridge. Choice A is incorrect because it defines 'suit' in terms of clothing, which is not relevant to the context of the passage. Choice C is incorrect as it defines 'suit' as a verb meaning to request persistently, which is unrelated to the card game. Choice D is also incorrect as it defines 'suit' as an adjective meaning to be convenient or right for, which is not the meaning intended in the passage about Bridge.

3. What is the term for the movement of ions and other molecular substances across cell membranes without the need for energy?

Correct answer: B

Rationale: Passive transport refers to the movement of substances across cell membranes without the need for energy input. In contrast, active transport, choice A, requires energy to move substances against their concentration gradient. Diffusion, choice C, is a type of passive transport where substances move from an area of high concentration to low concentration. Osmosis, choice D, specifically refers to the movement of water molecules across a selectively permeable membrane.

4. In a phospholipid molecule, the head:

Correct answer: D

Rationale: The head of a phospholipid is hydrophilic (water-loving) and is located on the outer side of the lipid bilayer, interacting with water molecules. This arrangement positions the hydrophobic tails inward, away from water. Therefore, the correct answer is D. Choice A is incorrect because the head is hydrophilic, not hydrophobic. Choice B is incorrect as the head is on the outer side, not the inner side of the layer.

5. What is the meaning of the word touted as used in the first paragraph about Aromatherapy?

Correct answer: B

Rationale: "Touted" in this passage means glorified or praised, indicating how aromatherapy has been widely promoted as beneficial. The context implies that while it is marketed positively, recent studies have called its effectiveness into question. Other choices do not capture this promotional aspect accurately, making B the best fit.

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