Antoine lavoisier, the french scientist credited with first stating the law of conservation of matter, heated a mixture of tin and air in a sealed flask to produce tin oxide. did the mass of the sealed flask and contents decrease, increase, or remain the same after the heating?
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Chemistry, 23.06.2019 01:30, emfranco1
Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.
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Chemistry, 23.06.2019 11:30, baptistatm51976
If 4.8 moles of x and 3.4 moles of y react according to the reaction below, how many moles of the excess reactant will be left over at the end of the reaction? 3x + 2y โyieldsโ/ x3y2. a. 1.7 mol y left over b. 1.6 mol x left over c. 0.2 mol y left over d. 0.1 mol x left over
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Chemistry, 23.06.2019 14:00, jadkins842
Ahas distinct properties and composition that never vary.
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Chemistry, 23.06.2019 18:00, keshewar4427
Amolecule is a(n) - a. element that physically combines with another element. b. particle composed of two or more atoms bonded together covalently. c. element that isn't bonded to another element.
Answers: 1
Antoine lavoisier, the french scientist credited with first stating the law of conservation of matte...
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