Chemistry, 25.08.2019 04:00 rodneydean4515
When an atom of the unstable isotope na-24 decays, it becomes an atom of mg-24 because the na-24 atom spontaneously releases:
(1) an alpha particle
(2) a beta particle
(3) a neutron
(4) a positron
Answers: 2
Chemistry, 23.06.2019 08:50, leah5981
Reacting masses1 calcium carbonate breaks down on heating to produce calcium oxide and carbondioxide gas. caco3 + cao + co2a student heats 15 g of calcium carbonate strongly in a crucible. relative atomic masses (a): ca = 40, c = 12, o = 16.calculate the mass of calcium oxide produced by this reaction.(5 marks)
Answers: 3
Chemistry, 23.06.2019 13:30, sophie5988
Where are electrons with the lowest energy found? in the nucleus farthest from the nucleus outside the atom closest to the nucleus
Answers: 1
Chemistry, 23.06.2019 13:50, isaac7454
Use the periodic table and your knowledge of isotopes to complete these statements. when polonium-210 emits an alpha particle, the child isotope has an atomic mass of 1-131 undergoes beta-minus decay. the chemical symbol for the new element is fluorine-18 undergoes beta-plus decay. the child isotope has an atomic mass of done intro donne
Answers: 1
When an atom of the unstable isotope na-24 decays, it becomes an atom of mg-24 because the na-24 ato...
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