12/02/12

calculating the van't Hoff factor
When 9.12 g of HCl was dissolved in 190 g of water, the freezing point of the solution was -4.65oC.  What is the value of the van't Hoff factor for HCl? Here is what I did- I know that I use:... more
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11/26/12

What mass of water is necessary to prepare 280.0 g of 1.20% saline solution?
Please explain.  Thanks
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Expert Answers •2

11/26/12

If 10.0 ml of blood plasma has a mass of 10.279 g and contains 0.870 g of protein, what is the mass/ mass percent concentration of the sample?
Please explain how to do this!  Thanks.
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Expert Answers •1

11/15/12

A gas in a balloon expands from 2L to 3L against 2 atm of pressure, what is the change in temperature relative to the initial temperature?
This was all the information given.  Please help me solve this!  Thank you!
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Expert Answers •2

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