a medication order is for 250 micrograms of a drug to be administered subcutaneously the available syringe measures in milliliters how many milliliter

HESI A2

Practice HESI A2 Math Test

1. A medication order is for 250 micrograms of a drug to be administered subcutaneously. The available syringe measures in milliliters. How many milliliters should the healthcare professional draw up?

A. 0.00025 milliliters
B. 0.0025 milliliters
C. 0.025 milliliters
D. 0.25 milliliters

Correct answer: D

Rationale: 1 milliliter (mL) is equal to 1000 micrograms (mcg). Therefore, to find out how many milliliters are needed for 250 micrograms: 250 mcg ÷ 1000 = 0.25 mL. So, the healthcare professional should draw up 0.25 milliliters of the drug to administer 250 micrograms subcutaneously. Choice A, 0.00025 milliliters, is incorrect as it is too small a volume for the required dosage. Choice B, 0.0025 milliliters, is also too small. Choice C, 0.025 milliliters, is 100 times greater than the correct answer of 0.25 milliliters. Therefore, the correct answer is 0.25 milliliters.

2. What was the most dangerous part of building the Golden Gate Bridge?

A. Balancing the road to prevent collapse.
B. Constructing the towers due to their height.
C. Suspending the cables with difficulty.
D. Ensuring the critical balance of the bridge.

Correct answer: A

Rationale: The most dangerous part of building the Golden Gate Bridge, as mentioned in the passage, was keeping the road balanced to prevent it from collapsing. While constructing the towers and suspending the cables were challenging tasks, the passage specifically highlights the balancing of the bridge as the most treacherous aspect of the construction. Therefore, choice A is the correct answer. Choices B, C, and D are incorrect as they do not reflect the primary danger emphasized in the passage.

3. In terms of electrical conductivity, semiconductors fall between

A. Conductors and insulators
B. Conductors and superconductors
C. Insulators and dielectrics
D. Superconductors and insulators

Correct answer: A

Rationale: Semiconductors have electrical conductivities that lie between those of conductors (high conductivity) and insulators (low conductivity). This positioning makes choice A, 'Conductors and insulators,' the correct answer. Choice B, 'Conductors and superconductors,' is incorrect because superconductors have perfect conductivity, not intermediate like semiconductors. Choice C, 'Insulators and dielectrics,' is incorrect because dielectrics are a type of insulator, so it doesn't show the progression from high to low conductivity. Choice D, 'Superconductors and insulators,' is incorrect because superconductors have the highest conductivity, opposite to the role of semiconductors.

4. _ having trouble with _ new dog.

A. There, their
B. Their, there
C. They’re, their
D. Their, they’re

Correct answer: C

Rationale: In this sentence, the correct choices are 'They’re' and 'their.' 'They’re' is a contraction of 'they are,' which fits the context of the sentence as it suggests ownership of the dog. 'Their' is a possessive pronoun showing ownership. Choice A is incorrect as 'there' refers to a place and doesn't make sense in this context. Choice B is incorrect as the possessive pronoun 'their' should come before the noun 'dog'. Choice D is incorrect as 'they’re' should be used before the verb 'having trouble' to form a contraction for 'they are'.

5. An apartment is advertised as being furnished. What does the sentence mean?

A. It is equipped with articles
B. It has just been repainted
C. The first month’s rent must be paid in advance
D. The utility bills are included in the rental cost

Correct answer: A

Rationale: The correct answer is A: 'It is equipped with articles.' In real estate terms, when an apartment is advertised as 'furnished', it means that the apartment comes equipped with furniture and other necessary items. This choice directly reflects the meaning of a furnished apartment. The other choices are incorrect because being furnished does not imply that the apartment has just been repainted (B), requires the first month’s rent to be paid in advance (C), or includes utility bills in the rental cost (D).