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Chemistry, 21.06.2019 14:30
Which statement about sound is not true? a. air particles travel with sound waves. b. sound waves cannot travel through a vacuum. c. sound waves exist even if no one hears them. d. air particles vibrate along the path of a sound wave.
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Chemistry, 22.06.2019 12:30
Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17
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Chemistry, 22.06.2019 13:30
Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?
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Which of the following compounds will produce h2o as one of the products when it decomposes? cu(oh)...
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