I really need help.. I need to find out the moles of water withing a...

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04-29-2008, 03:23 PM

Lost In Chemistry

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I really need help.. I need to find out the moles of water withing a...

...hydrate and I am drawing a blank.? Mass of Empty crucible and cover 35.25g.
Mass of crucible, cover and copper sulfate hydrate 41.12g
Mass of crucible, cover and anhydrous copper sulfate after first heating 38.89g
After Second heating 38.87

1. Determine the mass of anhydrous copper sulfate produced
2. Calc the moles of anhydrous copper made
3.Determine the mass of H2O that was driven from hydrate
4.Calc Moles of water driven from hydrate
5. Determine the ratio of moles of H2O to moles of anhydrous copper sulfate
6. Convert ratio to nearest whole numbers

Thank you in advance. I am just so lost with this one. I cannot wrap my head around it.

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