Question

The concentration of furosemide (Lasix) is 5%. How many milligrams are in 0.5 ml?

1. 25 mg
2. 10 mg
3. 50 mg
4. 2.5 mg

Answer 1

A 5% concentration of furosemide (Lasix) means there are 5 grams per 100 ml. To find out how many milligrams are in 0.5 ml, the concentration is converted to grams and then to milligrams, resulting in 25 milligrams in 0.5 ml.

Step-by-step explanation:

The concentration of furosemide (Lasix) is 5%. To calculate how many milligrams are in 0.5 ml, we need to understand that a 5% concentration means there are 5 grams of furosemide in every 100 ml of the solution. To determine the milligrams in 0.5 ml, we first convert the percentage to a decimal (5% = 0.05), then multiply this by the volume in milliliters.

Calculation: 0.05 (g/ml) × 0.5 ml = 0.025 g

Since 1 gram equals 1000 milligrams, we convert 0.025 grams to milligrams.

0.025 g × 1000 mg/g = 25 mg

Therefore, there are 25 milligrams of furosemide in 0.5 ml of a 5% solution.