By touching the side of a beaker, a student concludes that an endothermic change is taking place inside it. write 2-3 sentences explaining how the student came to that conclusion and compare the energy products of an endothermic reaction with the energy of the reactants.
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Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons
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What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?
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Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?
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By touching the side of a beaker, a student concludes that an endothermic change is taking place ins...
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