Question

question 7 (2.5 points)
one hundred and sixty (160) ml of hydrogen peroxide is needed to make 240 ml of 2/3 strength hydrogen peroxide solution.
true
false
question 8 (2.5 points)
a patient is prescribed to receive 1 l of d5w to infuse at 250 ml/hr. how long will it take to infuse this solution?
4 hours
8 hours
12 hours
16 hours

Explanation:

Question 7

To determine if 160 mL of hydrogen peroxide is needed for 240 mL of 2/3 strength solution, we use the formula: \( \text{Volume of solute} = \text{Strength} \times \text{Volume of solution} \).

Step 1: Calculate the required solute volume

The strength is \( \frac{2}{3} \) and the solution volume is 240 mL. So, \( \text{Volume of solute} = \frac{2}{3} \times 240 \) mL.
\( \frac{2}{3} \times 240 = 160 \) mL.
Since the calculated volume (160 mL) matches the given volume, the statement is True.

To find the infusion time, we use the formula: \( \text{Time} = \frac{\text{Total Volume}}{\text{Infusion Rate}} \).

Step 1: Convert total volume to mL

1 L = 1000 mL.

Step 2: Calculate time

Total volume = 1000 mL, infusion rate = 250 mL/hr. So, \( \text{Time} = \frac{1000}{250} \) hours.
\( \frac{1000}{250} = 4 \) hours.

Answer:

True

Question 8