When 250 mg of a medication is diluted in 500 mL of 5% dextrose in water, how many milligrams of the medication will be in 1 mL of D5W?
0.5.
50.
500.
5.
The Correct Answer is D
The question asks how many milligrams of the medication will be in 1 mL of D5W. To find this, we need to know the concentration of the medication in the solution.
Concentration is the amount of medication per unit volume of solution. We can use this formula:
Concentration = Mass / Volume
We know that 250 mg of the medication is diluted in 500 mL of D5W. So we can plug these values into the formula:
Concentration = 250 mg / 500 mL Simplifying, we get:
Concentration = 0.5 mg / mL
This means that there are 0.5 mg of the medication in every 1 mL of D5W. So the answer is
- To check our answer, we can use another formula:
Mass = Concentration x Volume
If we want to find the mass of the medication in 1 mL of D5W, we can multiply the concentration by the volume:
Mass = 0.5 mg / mL x 1 mL Simplifying, we get:
Mass = 0.5 mg
This matches our answer.
The other choices are wrong because they do not use the correct formula or values. Here is why:
Choice A is wrong because it uses the inverse of the concentration (1 / 0.5) instead of the concentration (0.5).
Choice B is wrong because it uses the mass of the medication (250 mg) instead of the concentration (0.5 mg / mL).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The first observation the nurse should perform for a client who is receiving from the post anesthesia unit after a colon resection is to assess the patency of the airway and respiratory function.
This is because the airway is the most vital for the survival of the client and any compromise can lead to hypoxia and death.
The nurse should then take vital signs, check the wound dressing, and assess the foley catheter drainage.
Choice A is wrong because the client’s wound dressing is not as important as the airway and can be checked later.
Choice B is wrong because the client’s level of consciousness may be affected by the anesthesia and is not a priority over the airway.
Choice D is wrong because the client’s foley catheter drainage is not a critical observation and can be monitored later.
Normal ranges for respiratory rate are 12 to 20 breaths per minute for adults, oxygen saturation is 95% to 100%, and blood pressure is 120/80 mmHg for healthy individuals.
Correct Answer is C
Explanation
This would help the client to feel valued, respected and involved in their own care, which can enhance their self-esteem.
Choice A is wrong because adding a nursing diagnosis of lowered self-esteem to the care plan does not address the underlying causes of the problem or provide any interventions to improve it.
It may also label the client and make them feel worse.
Choice B is wrong because giving praise for every decision the client makes is not realistic or sincere.
It may also undermine the client’s confidence and autonomy by implying that they need constant approval from others.
Choice D is wrong because modeling competent care for the client does not necessarily help them to maintain their self-esteem.
It may even make them feel inadequate or dependent on the nurse.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.