Nursing Metric Conversion

Correct Answer: A

Rationale: To express 0.07 as a fraction, we consider the decimal places. Since there are two decimal places in 0.07, we write it as 7/100. This simplifies to 7/100 as the correct fraction. Option A is correct as it represents 0.07 accurately. Options B, C, and D are incorrect as they do not match the decimal value of 0.07. B is 1/10, C is 1/20, and D is 1/50, which are not equivalent to 0.07.

Correct Answer: A

Rationale: To convert liters to milliliters, you need to multiply by 1000 since 1 liter equals 1000 milliliters. So, 0.5 liters * 1000 = 500 ml. Therefore, the correct answer is A: 500 ml. Choice B (50 ml) is incorrect as it is 10 times less than the correct answer. Choice C (5 ml) is incorrect as it is 100 times less, and choice D (0.5 ml) is incorrect as it is the original volume in milliliters, not the conversion from liters.

Correct Answer: C

Rationale: The correct answer is C: 1,000 mL. This is because there are 1,000 milliliters in 1 liter. This conversion is based on the metric system, where the prefix "milli-" represents one-thousandth of the base unit. In this case, the base unit is the liter. To convert from liters to milliliters, you multiply the number of liters by 1,000 since there are 1,000 milliliters in one liter. Therefore, 1 liter is equal to 1,000 milliliters. Choices A, B, and D are incorrect because they do not accurately represent the conversion factor between liters and milliliters.

Correct Answer: A

Rationale: To convert milligrams (mg) to micrograms (mcg), you need to multiply by 1000 since there are 1000 micrograms in 1 milligram. So, 0.025 mg x 1000 = 25 mcg, which is option A. Option B is incorrect as it incorrectly multiplies by 10. Option C is incorrect as it incorrectly divides by 10. Option D is incorrect as it incorrectly divides by 100. Always remember the conversion factor of 1000 when converting between milligrams and micrograms.

Correct Answer: B

Rationale: The correct answer is B: volume. Volume refers to the amount of space an object occupies in three dimensions. It is calculated by multiplying the length, width, and height of an object. Mass (A) is the amount of matter in an object, density (C) is the mass per unit volume, and area (D) is the measurement of the surface of an object in two dimensions. Therefore, volume is the most appropriate term for describing the amount of space an object occupies.