A 2.005 sample of xCuSO4 yH2O was heated to drive off water from the hydrated salt. The anhydrous salt weighed 1.283 grams. a. What is the mass of water lost.
b. How many moles of water were lost.
c. How many moles of anhydrous salt remain.
d. What is the empirical formula for the hydrate (Ration x:y).

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present