Determine How Much Energy Is Released When Thorium-230 Decays According ${ }^{230} \mathrm{Th} \rightarrow{ }^{4} \mathrm{He}+{ }^{226} \mathrm{Ra}$

Determine how much energy is released when thorium-230 decays according to ${ }^{230} \mathrm{Th} \rightarrow{ }^{4} \mathrm{He}+{ }^{226} \mathrm{Ra}$ . [Atomic masses: thorium-230 = 230.033127 amu; helium-4 = 4.002603 amu; radium-226 = 226.025403 amu]

A) 3.98 * 10⁹ kJ/mol
B) 4.60 * 10⁸ kJ/mol
C) 7.20 * 10¹¹ kJ/mol
D) 4.90 * 10⁹ kJ/mol
E) 7.15 * 10¹¹ kJ/mol

Correct Answer:

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