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7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '
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Stage in which a typical star has completely stopped fusion
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Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.
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An atom can be called a particle, but a molecule is never called a particle. True or False ?...
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