Foundations of College 5-6 Review
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The concept of positive charge and a small \"heavy\" nucleus surrounded by electrons was the contribution of
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Rutherford
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The neutron was discovered by
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Dalton
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An atom of atomic #53 and mass # 127 contains how many neutrons
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180
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How many electrons are in an atom 40/18Ar
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18
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The number of neutrons in an atom of 139/56Ba is
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83
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The name of the isotope containing one proton and two neutrons is
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tritium
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Each atom of a specific element has the same
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number of protons
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Which pair of symbols represents isotopes
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7/3 Li and 6/3 Li
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@ naturally occurring isotopes of an element have masses and abundance as follows: 54.00 amu (20.00%) and 56.00 amu (80.00%) What is the relative atomic mass of the element
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55.60
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Substance X has 13 proton, 14 neutrons, & 10 electrons. Determine its identity
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27Al3+
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The mass of a chlorine atom is 5.90 x 10-23g. How many atoms are in a 42.0 -g sample of chlorine?
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7.12 x 10^23
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The number of neutrons in an atom of 108/47 Ag is
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61
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The number of electrons in an atom of 27/13 Al is
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13
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The number of protons in an atom of 65/30Zn is
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30
