Nursing Elites

1. What does the sum of protons and neutrons in an element represent?

• A. Atomic number
• B. Mass number
• C. Atomic mass
• D. Neutron number

Correct answer: B

Rationale: The sum of protons and neutrons in an element is known as the mass number. The mass number is an important concept in chemistry as it represents the total number of nucleons (protons and neutrons) in an atom's nucleus. It is different from the atomic number, which represents the number of protons in an atom. The atomic mass is the average mass of an element's isotopes, taking into account the abundance of each isotope. Neutron number, on the other hand, specifically refers to the number of neutrons in an atom's nucleus. Therefore, the correct answer is B, mass number.

2. What are the soft spots on the head of a newborn called?

• A. Fistula
• B. Fontanel
• C. Follicle
• D. Fissure

Correct answer: B

Rationale: The correct answer is 'Fontanel.' Fontanels are the soft spots on a newborn's head where the skull bones have not yet fused together, allowing for some flexibility during birth and rapid brain growth in early infancy. 'Fistula' is a medical term for an abnormal connection between two body parts. 'Follicle' refers to a small cavity in the skin from which hair grows. 'Fissure' is a narrow opening or crack, not related to the soft spots on a newborn's head.

3. Where is Thailand located?

• A. Africa
• B. Europe
• C. South America
• D. Asia

Correct answer: D

Rationale: Thailand is located in Asia, not South America. Thailand is a country in Southeast Asia known for its beautiful beaches, rich culture, and delicious cuisine. It shares borders with Myanmar, Laos, Cambodia, and Malaysia. The extract provided also mentions the country of Siam, which is now known as Thailand, indicating its location in Asia. Choices A, B, and C are incorrect as Thailand is not located in Africa, Europe, or South America.

4. Based on this passage, what can the reader infer about the advice physicians will give their pregnant patients about coffee consumption?

• A. Almost all of them will advise women to stop drinking any caffeine until after the baby is born.
• B. The majority will ignore the study altogether and continue to advise caffeine in moderation as before.
• C. All of them will demand additional research be done before they change what they tell their patients.
• D. Some will continue to make their normal recommendations about caffeine, while others will be more cautious than before.

Correct answer: D

Rationale: The passage implies that there is variability in physician responses to the study about caffeine consumption. Some doctors may continue their standard recommendations, while others might advise more caution based on the new evidence. Therefore, option D reflects this variability in professional opinions and is the correct inference.

5. Which statement is true of a saturated solution?

• A. It has more solute than can dissolve in the solvent.
• B. It has less solute that can dissolve in the solvent.
• C. It has the maximum concentration of the solute dissolved in the solvent.
• D. It contains a precipitate that lowers the concentration of the solute in the solvent.

Correct answer: C

Rationale: A saturated solution contains the maximum concentration of solute that can be dissolved in a specific amount of solvent at a particular temperature. Once a solution is saturated, adding more solute will not increase its concentration since the excess solute will not dissolve and will instead form a precipitate, indicating that the solution is at its maximum capacity. Choices A, B, and D are incorrect because a saturated solution has reached its limit in dissolving solute, so it cannot contain more solute than it can dissolve (choice A), less solute than it can dissolve (choice B), or a precipitate that lowers the concentration of the solute in the solvent (choice D).

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