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!)
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