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April 16, 2014

Homework Help: chemistry

Posted by Nancy on Thursday, November 8, 2012 at 7:42pm.

I need help with this lab.

Write the equation for the decomposition of the hydrate, CuSO4*XH2O.

Mass of crucible and hydrate: 93.000g
Mass of crucible and pure salt: 91.196g

I need to calculate the following:

1. mass of water in hydrate sample(g)
2. number of moles of water in the sample
3. mass of pure salt in the sample(g)
4. number of moles of salt in the sample
5. molar ratio of water to salt in the sample

From your calculations what is the empirical formula of copper sulfate hydrate?

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