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Topic: Need some help with a density problem...  (Read 4235 times)

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Offline AshleyCCC

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Need some help with a density problem...
« on: January 30, 2009, 12:02:37 AM »

Hey all, hope you're all having a good week. I have a test next week & can't solve this problem, any help? Thanks.

 

The density of a 50%by weight ethanol & water mixture is 909.9 kg/m^3

Determine the volume of water & ethanol needed to make 1m^3 of a 50% by weight mixture of ethanol in water.


Density ethanol: 789 kg/m^3
Density Water: 998 kg/m^3
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Offline AWK

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Re: Need some help with a density problem...
« Reply #1 on: January 30, 2009, 01:09:13 AM »
Calculate masses of both liquids in 1 cubic meter, then their volumes
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Offline AshleyCCC

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Re: Need some help with a density problem...
« Reply #2 on: January 30, 2009, 02:21:09 AM »
Ty , I always forget that you can do a basis.
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Offline mohd

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Re: Need some help with a density problem...
« Reply #3 on: February 03, 2009, 09:59:57 PM »
take .50 * 909.9 = 454.95 this is your density ,, you have check it out
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