Question

question 6 you have an order for iv magnesium sulfate 4 g in 100 ml d5w over 30 minutes. how much magnesium sulfate 50% do you need to add to 100 ml d5w for this order? select one: a. 1 ml b. 2 ml c. 6 ml d. 8 ml question 7 you have an order for iv magnesium sulfate 4 g in 100 ml d5w over 30 minutes. what is the hourly rate required for this order? select one: a. 100 ml/hour b. 150 ml/hour c. 200 ml/hour d. 250 ml/hour

Explanation:

QUESTION 6

Step1: Understand 50% solution

A 50% magnesium sulfate solution means 50 g per 100 mL (or 0.5 g per mL, since \( \frac{50\,\text{g}}{100\,\text{mL}} = 0.5\,\text{g/mL} \)).

Step2: Calculate volume needed

We need 4 g of magnesium sulfate. Using the concentration \( 0.5\,\text{g/mL} \), the volume \( V \) is \( V=\frac{\text{mass}}{\text{concentration}}=\frac{4\,\text{g}}{0.5\,\text{g/mL}} = 8\,\text{mL} \)? Wait, no—wait, 50% is 50g/100mL, so per mL it's 0.5g. Wait, 4g needed. So \( V = \frac{4\,\text{g}}{0.5\,\text{g/mL}} = 8\,\text{mL} \)? Wait, but let's check again. Wait, 50% solution: 50g in 100mL, so 1mL has 0.5g. So to get 4g, \( \frac{4\,\text{g}}{0.5\,\text{g/mL}} = 8\,\text{mL} \)? Wait, but the options have 8mL as d. Wait, but maybe I made a mistake. Wait, 50% magnesium sulfate: 50g/100mL, so 1mL = 0.5g. So 4g / 0.5g per mL = 8mL. So answer is d.

Step1: Analyze the time and volume

We have 100 mL to be infused over 30 minutes. We need to find the rate in mL per hour.

Step2: Convert time to hours and calculate rate

30 minutes is \( \frac{30}{60}=0.5 \) hours. The rate \( R \) is \( R=\frac{\text{volume}}{\text{time}}=\frac{100\,\text{mL}}{0.5\,\text{hours}} = 200\,\text{mL/hour} \).

Answer:

d. 8 mL

QUESTION 7