Achemistry teacher carried out several demonstrations, and students recorded their observations. for one of the demonstrations, a student concluded that a physical change took place, but not a chemical change. which of the following observations could the student have made of the results of the demonstration?
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Chemistry, 23.06.2019 03:50
Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer.
Answers: 1
Chemistry, 23.06.2019 13:30
How does water evaporating from a glass show that matter is made up of particles? a. the heat energy from the air causes the glass to fill up with water particles. b. the liquid water particles turn into water vapor that spreads in the air. c. the particles of the glass dissolve in water and cause it to evaporate. d. the tiny particles of the glass evaporate and seem to disappear.
Answers: 2
Chemistry, 23.06.2019 19:00
Hjulstrom's diagram plots two curves representing (1) the minimum stream velocity required to erode sediments of varying sizes from the stream bed, and (2) the minimum velocity required to continue to transport sediments of varying sizes. this is a modified version of the diagram, showing only the transport segment. stream competence refers to the heaviest particles a stream can carry. according to hjulstrom's diagram stream competence depends on a) particle size. b) stream velocity. c) stream deposition. d) stream channel shape.
Answers: 2
Chemistry, 23.06.2019 22:00
2. a sample of table sugar (sucrose, c12h22o11) has a mass of 1.202 g. a. calculate the number of moles of c12h22o11 contained in the sample. show your work. b. calculate the moles of each element in c12h22o11, show your work c. calculate the number of atoms of each type in c12h22o11. show your work
Answers: 2
Achemistry teacher carried out several demonstrations, and students recorded their observations. for...
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