How many liters are in 750 milliliters?

Correct Answer: B

Rationale: To convert milliliters to liters, you need to divide by 1000 since there are 1000 milliliters in a liter. Therefore, 750 milliliters divided by 1000 equals 0.75 liters. Choice A (7.5 liters) is incorrect as it is off by a factor of 10. Choice C (0.0075 liters) is incorrect as it is off by a factor of 100. Choice D (0.075 liters) is incorrect as it is off by a factor of 10.

Correct Answer: C

Rationale: To convert milliliters to liters, you need to divide by 1,000 since there are 1,000 milliliters in a liter. Therefore, 3,000 milliliters / 1,000 = 3 liters. Choice A '0.3 liters' is incorrect as it represents 300 milliliters, not 3,000. Choice B '30 liters' is incorrect as it is the result of multiplying by 10 instead of dividing by 1,000. Choice D '0.03 liters' is incorrect as it represents 30 milliliters, not 3,000.

Correct Answer: B

Rationale: To convert kilograms to grams, you need to multiply by 1000 since there are 1000 grams in 1 kilogram. Therefore, 0.5 kilograms is equal to 500 grams (0.5 x 1000 = 500). Choice A (50 grams) is incorrect as it is the result of multiplying by 10 instead of 1000. Choice C (5,000 grams) is incorrect as it is the result of adding an extra zero. Choice D (0.5 grams) is incorrect as it represents the original amount in grams, not the converted amount.

Correct Answer: B

Rationale: In nursing, understanding metric conversions is crucial for accurate medication dosing, fluid calculations, and other clinical tasks. In this question, the correct answer is B) 1.5 kg. To convert grams to kilograms, you need to divide by 1000 since there are 1000 grams in 1 kilogram. Explanation of options: A) 0.15 kg - This is incorrect because dividing 1500 grams by 1000 equals 1.5 kg, not 0.15 kg. C) 15 kg - This answer is incorrect as it is 10 times the correct answer, resulting from multiplying instead of dividing by 1000. D) 150 kg - This option is incorrect as it is 100 times the correct answer, indicating a miscalculation in conversion. Educational context: Understanding metric conversions is a fundamental nursing skill to ensure patient safety and precision in healthcare delivery. Nurses need to accurately convert between units to administer medications, calculate IV fluid rates, and interpret lab values. This question reinforces the importance of mastering basic math skills in the context of nursing practice.

Correct Answer: A

Rationale: The correct answer is A: 298.15 K. The conversion from Celsius to Kelvin is K = C + 273.15. Therefore, 25°C is equivalent to 298.15 K, as 25 + 273.15 = 298.15. Choice B, 273.15 K, is the freezing point of water in Kelvin, not the equivalent of 25°C. Choice C, 250 K, and Choice D, 25 K, are incorrect conversions and do not align with the correct formula for converting Celsius to Kelvin.