Question: How much antibiotic and water do you need to prepare a 100 ppm (parts per million) solution if you want 100 ml of the final solution?
Options:
100 mg and 1 litre (1 L)
10 mg and 100 ml
1 mg and 1 litre (1 L)
10 mg and 1 litre (1 L)
• ✅Explanation: To prepare a 100 ppm (parts per million) solution, we need 100 mg of antibiotic for every liter (1000 ml) of solution. Since you're preparing 100 ml of the final solution, you can use the following calculation:
-100 ppm means 100 mg of antibiotic per 1000 ml of solution.
-To prepare 100 ml of solution, the required amount of antibiotic would be: Amount of antibiotic=100 mg×100 ml1000 ml=10 mgtext{Amount of antibiotic} = 100 , text{mg} times frac{100 , text{ml}}{1000 , text{ml}} = 10 , text{mg}Amount of antibiotic=100mg×1000ml100ml​=10mg
-So, you need 10 mg of antibiotic and 100 ml of water to prepare the 100 ml of 100 ppm solution.
-100 ppm means 100 mg of antibiotic per 1000 ml of solution.
-To prepare 100 ml of solution, the required amount of antibiotic would be: Amount of antibiotic=100 mg×100 ml1000 ml=10 mgtext{Amount of antibiotic} = 100 , text{mg} times frac{100 , text{ml}}{1000 , text{ml}} = 10 , text{mg}Amount of antibiotic=100mg×1000ml100ml​=10mg
-So, you need 10 mg of antibiotic and 100 ml of water to prepare the 100 ml of 100 ppm solution.