Oregon Certified Nursing Assistant State Practice Exam

How many cc are equivalent to eight ounces?

1. 180

2. 240

3. 210

4. 120

The correct answer is: 240

To understand why the answer is 240, it's important to know the relationship between ounces and cubic centimeters (cc). One ounce is equivalent to approximately 29.57 cc. To convert ounces to cc, you multiply the number of ounces by 29.57. In this case, you have eight ounces. Therefore, the conversion would be: 8 ounces × 29.57 cc/ounce = 236.56 cc. For practical purposes, this is often rounded to 240 cc. The choice of 240 becomes the most appropriate answer when we look at common rounding practices in nursing and medical contexts, which often lean towards simpler numbers for ease of handling and understanding. Understanding this relationship helps to convert liquid measurements accurately, which is crucial for tasks like dosage calculations in healthcare settings.