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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, 22.06.2019 20:30
Select all the correct answers.which compounds have the empirical formula ch20? (multiple answers)a.c2h4o2b.c3h603c.ch2o2d.c5h1005e.c6h1206
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Chemistry, 22.06.2019 21:00
One similarity and one difference between an element and a mixture of elements
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Chemistry, 23.06.2019 01:30
What is produced from neutralization of an acid and a base? a. hydronium ions b. citric acid c. salt and water
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History, 01.04.2021 17:30
Mathematics, 01.04.2021 17:30
History, 01.04.2021 17:30
Mathematics, 01.04.2021 17:30
Mathematics, 01.04.2021 17:30
History, 01.04.2021 17:30
Mathematics, 01.04.2021 17:30