151. assignment (nuclear fission)
The radium isotope 223Ra, an alpha emitter, has a half-life of 11.43 days. You happen to have a 1.1g cube of 223Ra, so you decide to use it to boil water for tea. You fill a well-insulated container with 200mL of water at 18 0C and drop in the cube of radium. How long will it take the water to boil?
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