What is the name of the hydrate that you used in this experiment? 2. What is the formula of the hydrate that you used in this experiment?

What is the name of the hydrate that you used in this experiment?

2. What is the formula of the hydrate that you used in this experiment?

3. From its formula, what is the percentage of water in your hydrate?

This is your theorectical value. (Show work.)

What is your percent error?

6. Why is it important to heat the hydrate thoroughly?

7. Why must you use tongs or a holder to handle the test tube after heating?

8. What do the following symbols represent? a. (s) ___________________________ b. (aq) ____________________________

The mass of a test tube and hydrate was 35.2755 grams.

The mass of the empty test tube was 23.7726 grams.

The mass of the anhydrous salt and test tube was 31.0035 grams.

a. Find the mass of the original hydrate. (Show work for credit.)

b. Find the mass of the water lost after heating. (Show work for credit.)

4. From your experimental data, what is the percentage of water in your hydrate?

This is your experimental value. (What was the percent water in the hydrate? (Show work for credit.)

10. What is the percent water in calcium nitrate tetrahydrate? (Show work for credit.)

11. What is the percent water in lithium nitrate trihydrate? (Show work for credit.)

12. In another experiment, the mass of a hydrate was found to be 2.7090 grams. After heating, the anhydrous sample had a mass of 1.8820 grams.

Answer the following and show all work for credit.

a. What was the mass of water lost?

b. How many moles of water were lost? (Convert mass to moles.)

c. The ionic compound was found to be calcium nitrate.

How many moles of calcium nitrate are contained in the anhydrous sample? (Convert mass to moles.)

d. What is the ratio of moles of water to moles of anhydrous calcium nitrate? (Nearest Whole Numbers) Moles water _________: Moles anhydrous calcium nitrate _________

e. What is the formula for this compound? (Hint: Have you seen this compound before? Think coefficients!)