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question 6
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the tablets on hand are labelled 0.25 g each. the prescribers order is for 125 mg. you will give capsules.
type your answer in decimal form if necessary, do not use fractions.
question 7
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the prescribers order is 5 mg of a drug. the drug on hand is labelled 1.25 mg/5 ml. you will give ml.
type your answer in decimal form if necessary, do not use fractions.
question 8
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you are to give 150 mcg of a drug. the available concentration supplied is 0.5 mg/15 ml. you will give ml.
type your answer in decimal form if necessary, do not use fractions.

Explanation:

Question 6

Step1: Convert grams to milligrams

Since \( 1\space g = 1000\space mg \), then \( 0.25\space g = 0.25\times1000 = 250\space mg \).

Step2: Calculate the number of capsules

Let \( x \) be the number of capsules. We know that the amount per capsule is \( 250\space mg \) and the required amount is \( 125\space mg \). So we set up the equation \( 250x = 125 \). Solving for \( x \), we get \( x=\frac{125}{250}=0.5 \).

Step1: Set up the proportion

Let \( x \) be the volume in mL. The concentration is \( 1.25\space mg/5\space mL \), and we need \( 5\space mg \). So the proportion is \( \frac{1.25\space mg}{5\space mL}=\frac{5\space mg}{x\space mL} \).

Step2: Solve for \( x \)

Cross - multiplying gives \( 1.25x = 5\times5 \). Then \( 1.25x = 25 \), and \( x=\frac{25}{1.25}=20 \).

Step1: Convert milligrams to micrograms

Since \( 1\space mg = 1000\space mcg \), then \( 0.5\space mg = 0.5\times1000 = 500\space mcg \).

Step2: Set up the proportion

Let \( x \) be the volume in mL. The concentration is \( 500\space mcg/15\space mL \), and we need \( 150\space mcg \). So the proportion is \( \frac{500\space mcg}{15\space mL}=\frac{150\space mcg}{x\space mL} \).

Step3: Solve for \( x \)

Cross - multiplying gives \( 500x = 15\times150 \). Then \( 500x = 2250 \), and \( x=\frac{2250}{500}=4.5 \).

Answer:

\( 0.5 \)

Question 7