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What would happen to a volleyball left outside in the winter? o o o o a. it would expand. b. it would lose air. c. it would shrink. d. it would explode.
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Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?
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An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample? a. naphthalene, a molecular solid with the formula c10h8 b. silica, a network solid held together by covalent bonds with the formula sio2 c. calcium chloride, an ionic compound with the formula cacl2 d. water, an molecular compound with the formula h2o
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Chemistry, 23.06.2019 15:30
Which term defines a type of oxygen that forms a protective layer miles above the earth a. fossil fuel b. smog c. pollution d. ozone
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If 18.8 mLmL of 0.800 M HClM HCl solution are needed to neutralize 5.00 mLmL of a household ammonia...
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