Thursday
April 17, 2014

Homework Help: Math

Posted by julia on Saturday, April 21, 2007 at 4:52pm.

180 ml of a mixture of water and alcohol with 90% alcohol concentration is mixed with 70 ml of pure water. what is the alcohol concentration of the new mixture?

Do the following:

1) Find out how many ml of alcohol was in the first mixture. (What is 90% of 180?)

2) Take that amount and divide it by 250 ml (180ml + 70ml)

Matt

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math please - A 75% alcohol concentration mixture of water and alcohol was made ...
math - An alcohol solution consists of 6 gallons of pure water and x gallons of ...
math - An alcohol solution consists of 6 gallons of pure water and x gallons of ...
MATH - Pewee adds two liters of pure alcohol to a 30% solution of alcohol in ...
science - In 91% (by volume) isopropyl alcohol (a large [compared to water], ...
Chemistry - How would you prepare a 25.0% water in ethyl alcohol solution using ...
physics - . Ethyl alcohol has been added to 160 mL of water in a container that ...
Chemistry - What is the % by volume of an alcohol solution prepared from 35 ml ...
Chemistry - What is the % by volume of an alcohol solution prepared from 35 ml ...
MATH HELP - In what proportion should 95% alcohol be mixed with 30% alcohol to ...

Search
Members