Nursing Metric Conversion

Correct Answer: C

Rationale: To convert mg to mcg, you multiply by 1000 since 1 mg = 1000 mcg. So, 0.175 mg x 1000 = 175 mcg. Therefore, the correct answer is C: 1750 mcg. Choices A, B, and D are incorrect because they do not correctly convert milligrams to micrograms.

Correct Answer: A

Rationale: To convert liters to milliliters, you need to multiply by 1000 since 1 liter is equal to 1000 milliliters. Therefore, 0.5 liters x 1000 = 500 milliliters. So, the correct answer is A: 500 ml. Explanation of other choices: B: 50 ml - Incorrect, this would be the equivalent of 0.05 liters. C: 5 ml - Incorrect, this would be the equivalent of 0.005 liters. D: 0.5 ml - Incorrect, this is the same value as the given amount in liters, not the conversion to milliliters.

Correct Answer: A

Rationale: To convert liters to milliliters, we know that 1 liter is equal to 1000 milliliters. Therefore, 0.6 liters would be equal to 0.6 x 1000 = 600 milliliters. This makes choice A (600 ml) the correct answer. Choices B, C, and D are incorrect because they do not follow the correct conversion factor of 1 liter to 1000 milliliters. Choice B (60 ml) is ten times less than the correct answer, choice C (6 ml) is one hundred times less, and choice D (0.6 ml) is one thousand times less than the correct conversion.

Correct Answer: B

Rationale: The correct answer is B: Powers of 10. The metric system is based on the concept of powers of 10, where each unit is a multiple or fraction of 10. This allows for easy conversion between units by simply moving the decimal point. Multiplication (A), addition (C), and subtraction (D) are not the foundational principles of the metric system. Multiplication is involved in converting between different metric units, but the fundamental concept is the use of powers of 10. Addition and subtraction are not directly related to the structure of the metric system.

Correct Answer: A

Rationale: The prefix kilo- in the metric system represents the factor of 10^3. Kilo- means one thousand, so when used in conjunction with a base unit, it signifies that the value is being multiplied by 1000. For example, 1 kilometer is equal to 1000 meters. Therefore, the correct answer is A: 10^3. Choice B (10^2) is incorrect because this factor corresponds to the prefix hecto-, not kilo-. Choice C (10^4) is incorrect as it does not align with the meaning of kilo-, which specifically denotes a factor of 10^3. Choice D (10^6) is incorrect as it represents the prefix mega-, which signifies a factor of 10^6.