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How many moles are there in 8.5 x 1024 molecules of sodium sulfate, Na2SO4?...
Answers: 3
Chemistry, 22.06.2019 00:00, lilyclairehutson
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
Answers: 1
Chemistry, 22.06.2019 00:30, Bryanguzman2004
Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?
Answers: 3
Chemistry, 22.06.2019 01:40, natannale
Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.
Answers: 1
Mathematics, 13.09.2020 23:01
Mathematics, 13.09.2020 23:01
Mathematics, 13.09.2020 23:01
Mathematics, 13.09.2020 23:01
Mathematics, 13.09.2020 23:01
Mathematics, 13.09.2020 23:01
Mathematics, 13.09.2020 23:01
Mathematics, 13.09.2020 23:01
Mathematics, 13.09.2020 23:01
Mathematics, 13.09.2020 23:01