Chemistry, 13.09.2019 03:10, alyxkellar06
Which statements below are an appropriate hypothesis in response to this question? check all that apply. if a substance changes state of matter (e. g., liquid to gas), then this is a physical change because the original properties of the substance have not changed. if a substance undergoes a physical change, then it will retain most of its original properties because no new substance is formed. if a substance undergoes a chemical change, then it will not retain its original properties because a new substance is formed. if a precipitate is formed when two substances are mixed, then a chemical change has taken place because precipitates are new substances.
Answers: 1
Chemistry, 21.06.2019 22:00, anarosa331hotmailcom
What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz
Answers: 2
Chemistry, 22.06.2019 06:00, lindseyklewis1p56uvi
Ethanol (c2h5oh) is produced from the fermentation of sucrose in the presence of enzymes. c12h22o11(aq) + h2o(g) 4 c2h5oh(l) + 4 co2(g) determine the theoretical yield and the percent yields of ethanol if 680. g sucrose undergoes fermentation and 326.5 g ethanol is obtained. theoretical _ g _ percent %
Answers: 1
Which statements below are an appropriate hypothesis in response to this question? check all that a...
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