Radium-226 decays by alpha emission to radon-222 suppose, Ask an Expert

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Radium-226 decays by alpha emission to radon-222. suppose that 25.0% of the energy given off by one gram of radium is converted to electrical energy. What is the minimum mass of lithium needed in teh voltaic cellLi|Li⁺|Cu²⁺|Cu to produce the same electrica lwork(ΔG) at standard conditions?

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