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Sveta_85 [38]
3 years ago
12

Write the complete electron configuration for an atom of element 3

Chemistry
1 answer:
kondaur [170]3 years ago
3 0
Based on the ionization energy levels of element 3, one can tell that the element is Magnesium. Magnesium has an atomic number of 12 so in a neutral atom, that means that there are 12 protons and 12 electrons. So based on the electrons, we can write the electronic configuration as:

1s^{2}  2s^{2}  2p^{6}  3s^{2}
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Acetaminophen (C8H9NO2) is the active ingredient in many nonprescription pain relievers. Each tablet contains 500 mg of acetamin
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Element    Atomic mass    # of atoms   mass
                       g/mol                                  g
C               12                         8               12*8 = 96
H                 1                         9                1*9 =    9
N               14                         1               14*1 = 14
O               16                        2                16*2 = 32

                              molar mass =   96 + 9 + 14 + 32 = 151 g/mol

2) Number of mols in a tablet

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3) 3 doses * 2 tablets * 0.003311 moles / tablet = 0.020 moles
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