Metric Conversions for Nursing

Correct Answer: C

Rationale: To convert 5 kilometers to meters, you need to multiply by 1000 since 1 kilometer is equal to 1000 meters. Therefore, 5 kilometers x 1000 = 5000 meters. Choice C (5000 meters) is the correct answer. Choices A, B, and D are incorrect because they do not follow the correct conversion factor from kilometers to meters.

Correct Answer: A

Rationale: The correct answer is A: 10^-15 meters. 1 femtometer is equal to 10^-15 meters. This is because the prefix "femto-" represents 10^-15. Therefore, one femtometer is equivalent to 10^-15 meters. Choice B: 10^-9 meters is incorrect as this corresponds to the prefix "nano-" not "femto-". Choice C: 10^-12 meters is incorrect as this corresponds to the prefix "pico-" not "femto-". Choice D: 10^-18 meters is incorrect as this corresponds to the prefix "atto-" not "femto-". In summary, the correct answer is A because 1 femtometer is equal to 10^-15 meters, as per the corresponding SI prefix.

Correct Answer: C

Rationale: The correct answer is C: 2,000 mL. To convert liters to milliliters, you need to multiply by 1,000 since there are 1,000 milliliters in 1 liter. So, 2 liters x 1,000 mL = 2,000 mL. Explanation for Other Choices: A: 20 mL - This is incorrect as it is just 1% of 2 liters. B: 200 mL - This is also incorrect as it is 10% of 2 liters. D: 20,000 mL - This is incorrect as it is 10 times the correct answer, which is too large for 2 liters.

Correct Answer: A

Rationale: The correct answer is A: cubic meters. Volume is a three-dimensional measurement, so the base unit for volume of a solid in the metric system is cubic meters. Cubic meters represent the amount of space that a solid occupies in three dimensions. Meters cubed (B) is not the correct term for the base unit, as cubic meters is the standard notation. Grams (C) is a unit of mass, not volume. Centimeters (D) is a unit of length, not volume. Therefore, the most appropriate and accurate base unit for volume of a solid in the metric system is cubic meters.

Correct Answer: A

Rationale: To convert milligrams to micrograms, you need to multiply by 1000. So, 0.15 mg x 1000 = 150 mcg. This is why choice A (150 mcg) is correct. Choice B (15 mcg) is incorrect as it doesn't account for the conversion factor. Choice C (1.5 mcg) is incorrect as it is off by a factor of 10. Choice D (1500 mcg) is incorrect as it overestimates the conversion.