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March 4, 2015

Homework Help: Chemistry -repost thank you in advance

Posted by annie on Monday, September 20, 2010 at 10:33am.

I have a bottle of 95% ethanol purchased from the manufacturer.

Normally, when it is not stated, does it mean 95% w/w ethanol?

I need to prepare 100ml of 40% v/v ethanol solution from 95% ethanol.
Please show me the calculation steps.

Thanks.

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