Robitussin DM contains 100 mg of guaifenesin per 1 teaspoon. How many milligrams of guaifenesin are in 10 mL?
200 mg
100 mg
75 mg
50 mg
The Correct Answer is A
Robitussin DM contains 100 mg of guaifenesin per 1 teaspoon. One teaspoon is equivalent to 5 milliliters, so 100 mg is present in 5 mL. Therefore, 10 mL of Robitussin DM contains 2 times the amount of guaifenesin in 1 teaspoon or 200 mg.
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Related Questions
Correct Answer is D
Explanation
To calculate the amount of magnesium sulfate to be added to the normal saline, we can use the formula:
Concentration = Dose / Volume Plugging in the given values, we get:
Concentration = 2 g / 50 mL Simplifying, we get:
Concentration = 0.04 g/mL
To find the amount of magnesium sulfate needed for 1000 mL of normal saline, we can multiply the concentration by the volume:
Amount = Concentration × Volume Amount = 0.04 g/mL × 1000 mL Amount = 40 g
Therefore, 40 g of magnesium sulfate must be added to 1000 mL of normal saline to provide the ordered infusion.
Correct Answer is B
Explanation
We can use the formula for calculating infusion time:. Infusion time = Total volume / Infusion rate.
First, we need to convert the volume of the fluid from liters to milliliters:.
0.75 L = 750 mL.
Next, we can plug in the values we have:. Infusion time = 750 mL / 120 mL/hr.
Infusion time = 6.25 hours.
Since the infusion was started at 9:00 a.m., we can add 6.25 hours to determine when the infusion will be completed:.
9:00 a.m. + 6.25 hours = 3:15 p.m..
Therefore, the infusion will be completed at 3:15 p.m.
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