9. 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.) c. What was the percent water in the hydrate? (Show work for credit.)

A liquid has the mass of 122 oz and density of 5.66 g/ mL. Calculate the volume in mL.  A.) 616 mL. B.) 16.3 mL. C.) 125 mL. D.)  5.21 mL.

If X and Y are quantities that are related to each other by inverse proportion, what will the value of X become when the value of Y is increased by a factor of five? Select one: a. It will also increase by a factor of 5. b. It will decrease by a factor of 5. c. It will stay the same. d. There is no way to tell.

Experimental data. Your data are shown in lines 1-5 that you measured in the lab. Fill in the table where there are gray boxes for your calculations. You are working to determine the percent water in Unknown C.                                                                                         Trial 1                          Trial 2     1. Mass of fired crucible and lid (g) 24.98 g 25.12 g 2. Mass of fired crucible, lid, and hydrated salt (g) 28.89 g 27.67 g 3. Mass of crucible, lid, and anhydrous salt (g)   27.29 g     26.64 g                                                                                           Trial 1    Trial 2 4. Mass of hydrated salt (g)      5. Mass of anhydrous salt (g)     6. Mass of water lost (g)     7. Percent by mass of water in hydrated salt (%)     8. Average percent water in hydrated salt (%)

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