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Chemistry, 21.06.2019 18:30, mamasmontoya
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Chemistry, 21.06.2019 22:30, monnn91351
Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.
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What are the similarities of physical and chemical change ?
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What is calcium oxide+diphosphorus pentoxide--> calcium phosphate balanced
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35. Indium with proton number 49 is in Group 13 while antimony with proton number 51 is in
Group 15...
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