4. A salt
containing calcium, chlorine and water was analyzed in the following way:
Step 1: A 1.532 g sample of
the salt was heated to release all its water. After thorough
heating, 1.156 g of material remained.
Step 2: The 1.156 g sample
from step 1 (which now contained only calcium and chlorine)
was dissolved in water and treated with excess AgNO3. The resulting
AgCl was
washed and dried and found to weigh 2.987 g.
Use this information to determine
the empirical formula of the salt.
Answer
to Question 4
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