Ordered: 0.4 mL of potassium iodine expectorant.
Available: The label reads 325 mg per/ teaspoon (t).
How many milligrams are contained in the 0.4 mL dose?
Ordered dose of potassium iodine expectorant.is 0.4ml .
Available dose of potassium iodine is 325 mg per/ teaspoon (t).
1teaspoon is equal to 4.9ml
So, 4.9ml of solution contains 325mg of potassium iodine.
Using unitary method :-
4.9 ml of solution has 325mg of potassium iodine
1ml of solution has 325mg/4.9 ml of potassium iodine
Then 0.4ml of solution has 325/4.9 × 0.4mg = 26.5mg
26.5 mg of potassium iodine is present in 0.4ml of available solution of potassium iodine.
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