You are given a 20% lactose solution. How would you prepare a 50 ml of medium...

Question

Question

You are given a 20% lactose solution. How would you prepare a 50 ml of medium with a 1.0 mg/ml?

science biology

Answer 1

Answer #1

In 100 ml, amount of lactose = 20 gm

Therefore in 1ml, there would be 1/5 gm

0.2gm/ml * x = 1mg/ml *50

therefore x = (1*50)/(0.2*10^3) = 0.25 ml = 250ul

Therefore 250ul of 20% lactose solution has to be taken to prepare a 50ml of medium with 1mg/ml.

Answer 2

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