Answer to Question #344229 in Chemistry for yaya

Question

You need to conduct an antioxidant activity test using a plant crude extract. Using a 10 mg of extract, calculate the stock solution of 1 mg/ml which later needs to be diluted into various concentration; 100, 50, 10, 5, 1 and 0.5 µg/ml in ethanol. Assume final volumes that need to be prepared for each concentrations is 20 ml.

Answers need to include:

1.      Preparation of 1 mg/ml stock solution

2.      Preparation of 6 concentrations of extracts