- Chen
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更新1:
设Cl2 的mass系 20g
no.of mole atom of Cl2 Mass of Cl2 = 20 g Molar mass of Cl2 = 35.5 x 2 = 71 g mol-1 No. of moles of Cl2 = (20/71) mol Each Cl2 molecule contains 2 Cl atoms. No. of moles of Cl atom = (20/71) x 2 = (40/71) mol = 0.563 mol ===== no.of mole molecule of Cl2 Mass of Cl2 = 20 g Molar mass of Cl2 = 35.5 x 2 = 71 g mol-1 No. of moles of Cl2 = 20/71 = 0.282 mol ===== no.of mole ion of Cl2 Cl2 exists as molecules. There is no ion in Cl2. No. of moles of ions = 0 mol ===== no.of mole p+ of Cl2 No. of moles of Cl atoms = (40/71) mol Each Cl atom has 17 protons. No. of moles of protons = (40/71) x 17 = 9.58 mol ===== no.of mole neutron of Cl2 No. of moles of Cl atoms = (40/71) mol Relative atomic number = Number of protons + Average number of neutrons 35.5 = 17 + Average number of neutrons Average number of neutrons = 35.5 - 17 = 18.5 No. of moles of neutrons = (40/71) x 18.5 = 10.4 mol ===== no.of mole e- of Cl2 No. of moles of Cl atoms = (40/71) mol Each Cl atom has 17 electrons. No. of moles of electrons = (40/71) x 17 = 9.58 mol ===== no.of atom of Cl2 No. of moles of Cl atoms = (40/71) mol Avogadro number = 6.02 x 1023 No. of Cl atoms (in Cl2) = (40/71) x (6.02 x 1023) = 3.39 x 1023 atoms ===== no.of molecule of Cl2 No. of moles of Cl2 molecules = (20/71) mol No. of Cl2 molecules = (20/71) x (6.02 x 1023) = 1.70 x 1023 atoms ===== no.of ion of Cl2 No. of moles of ions in Cl2 = 0 mol No. of ions in Cl2 = 0 ions ===== no.of p+ of Cl2 No. of moles of protons = (40/71) x 17 No. of protons = (40/71) x 17 x (6.02 x 1023) = 5.77 x 1024 protons ===== no.of neutron of Cl2 No. of moles of neutrons = (40/71) x 18.5 No. of neutrons = (40/71) x 18.5 x (6.02 x 1023) = 6.27 x 1024 neutrons ===== no.of e- of Cl2 No. of moles of electrons = (40/71) x 17 No. of electrons = (40/71) x 17 x (6.02 x 1023) = 5.77 x 1024 electrons =