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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 18:00
What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j
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Chemistry, 22.06.2019 20:30
Which states of matter have particles that move independently of one another with very little attraction?
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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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Computers and Technology, 24.07.2020 16:01
English, 24.07.2020 16:01