The drug, the activity of which is equal to 1.7 x 10 12 alpha particles per second - placed in a calorimeter filled with water at 293 K. How much time would it take to bring to boil 10 grams of water, if it is known that the drug emits alpha particle energy of 5.3 MeV, the energy of alpha particles completely converted into internal energy? The heat capacity of the drug, and the calorimeter heat exchange with the environment negligible.

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