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A thorium-228 atom (mass 228.02 u) décays to radium-224 (mass 224.0202 u) through alpha emission (mass = 4.0026 u). The equation is shown below. How much energy is released from this reaction? Th → Ra +¿He+ energy 90 88 (a) 1.2 MeV (b) 2.4 MeV (c) 4.1 MeV (d) 5.5 MeV

A thorium-228 atom (mass 228.02 u) décays to radium-224 (mass 224.0202 u) through alpha emission (mass = 4.0026 u). The equation is shown below. How much energy is released from this reaction? Th → Ra +¿He+ energy 90 88 (a) 1.2 MeV (b) 2.4 MeV (c) 4.1 MeV (d) 5.5 MeV

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A thorium-228 atom (mass = 228.0287 u) decays to radium-224 (mass = 224.0202 u) through alpha emission (mass 4.0026 u). The equation is shown below. How much energy is released from this reaction? 228Th - 90 224 Ra +He+energy (a) 1.2 MeV (b) 2.4 MeV (c) 4.1 MeV (d) 5.5 MeV
Transcribed Image Text:A thorium-228 atom (mass = 228.0287 u) decays to radium-224 (mass = 224.0202 u) through alpha emission (mass 4.0026 u). The equation is shown below. How much energy is released from this reaction? 228Th - 90 224 Ra +He+energy (a) 1.2 MeV (b) 2.4 MeV (c) 4.1 MeV (d) 5.5 MeV
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