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.)

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Q: 18. Convert 1 MeV to a.m.u. 1.78 x 104 u 1.07 x 103 u 1.60 x 10 -13 J 9.67 x 10 ' u A C

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.