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How many moles of Pb are there in a sample of Pb that contains 3.41×1024 atoms?
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Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.
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Rays from the sun are not considered matter true or false
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Which of the following reactions represents an exothermic reaction? nh3(g) + 12.0 kcal ½n2(g) + 3/2 h2(g) ch4 + 2o2 co2 + 2h2o + 212,800 cal c + 2s cs2, h = 27,550 cal c(graphite) c(diamond), h = 0.45 kcal 2h2o 2h2 + o2, h = +58 kcal
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How many moles of Pb are there in a sample of Pb that contains 3.41×1024 atoms?...
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