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Chemistry, 22.06.2019 16:50
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
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Chemistry, 23.06.2019 03:30
Which of the following describes the entropy change as a solution is made from a liquid and solid
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How many liters of nitrogen gas at STP would react with 37.2 grams of magnesium...
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