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Anna35 [415]
3 years ago
6

I need help on number 8!!

Chemistry
1 answer:
Scrat [10]3 years ago
4 0
Mg3 n2 + 3h2O    3MgO + 2NH3
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How many milliliters of sterile water for injection should be added to a vial containing 5 mg/mL of a drug to prepare a solution
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Answer:

7mL of sterile water is the initial amount of the concentrated solution is 3mL

Explanation:

In this problem, the vial must be <em>diluted </em>from 5mg/mL to 1.5mg/mL, that means the solution must be diluted:

5mg/mL / 1.5mg/mL = 3.33 times

If the initial amount of the drug in the vial is 3mL, the final volume must be:

10mL

That means the volume of water that should be added is:

10mL - 3mL:

<h3>7mL of sterile water is the initial amount of the concentrated solution is 3mL</h3>
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