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# Equations and Formulas

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1. Write the equation for the decomposition of the hydrate, CuSO2*XH2O.

2. Record the following masses:

(a) mass of the empty crucible (g): 53.200g

(b) mass of the crucible and hydrate (g): 58.200g

(c) mass of the crucible and pure salt (g): 56.396g

3. Calculate the following:

(a) mass of water in the hydrate sample (g):

(b) number of moles of water in the sample:

(c) mass of pure salt in the sample (g):

(d) number of moles of salt in the sample:

(e) molar ratio of water to salt in the sample:

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

1. Write the equation for the decomposition of the hydrate, MgC*XH2O.

2. Record the following masses:

(a) mass of the empty crucible (g): 53.200g

(b) mass of the crucible and hydrate (g): 58.200g

(c) mass of the crucible and purer salt (g): 55.542g

3. Calculate the following:

(a) mass of water in the hydrate sample (g):

(b) number of moles of water in the sample:

(c) mass of pure salt in the sample (g):

(d) number of moles of salt in the sample:

(e) molar ratio of water to salt in the sample:

4. From your calculations, what is the empirical formula of magnesium chloride hydrate?