Question

prepare 500ml of 60% alcohol from 90% alcohol?​

Answer 1

Answer:

no because alcohol consumption and making of them are injuries to health and police take up and goes

just for fun ✌️✌️

Answer 2

Answer:

Explanation:

With no further information I would guess you are talking about 60% volumic, not massic. In this case it gets simple :

$V_{eth}$= 500×60100= 500×0.6= 300ml  

Then you'll have to put 300 ml of pure ethanol and 200 ml of water.