One pathway for the decay of "Mn is positron emission to form "Cr. The half-life of "Mn is 3.67 x 10" years. (Assume that 1 year 365.242 days.) (a) How Mn nuclei would decay per second in a 1.00 mol sample of "Mn? many muclei (b) The mass of " Mn is 52.94129012 u, the mass of "Cr is 52.94064939 u, and the mass of a positron is 0.0005485799090 u. What is the energy (in J) released in a single Mn decay event? (c) If all the energy released is assumed to be heat, how much heat (in J) is evolved in one year by the decay of the 1.00 mol sample of "Mn from part (a)?
One pathway for the decay of "Mn is positron emission to form "Cr. The half-life of "Mn is 3.67 x 10" years. (Assume that 1 year 365.242 days.) (a) How Mn nuclei would decay per second in a 1.00 mol sample of "Mn? many muclei (b) The mass of " Mn is 52.94129012 u, the mass of "Cr is 52.94064939 u, and the mass of a positron is 0.0005485799090 u. What is the energy (in J) released in a single Mn decay event? (c) If all the energy released is assumed to be heat, how much heat (in J) is evolved in one year by the decay of the 1.00 mol sample of "Mn from part (a)?
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Transcribed Image Text:One pathway for the decay of "Mn is positron emission to form "Cr. The half-life of "Mn is 3.67 x 10° years (Assume that 1 year 365.242 days.)
(a) How many "Mn nuclei would decay per second in a 1.00 mol sample of "Mn?
huclei
(b) The mass of 53 Mn is 52.94129012 u, the mass of "Cr is 52.94064939 u, and the mass of a positron is 0.000548579909 u. What is the energy (in J) released in a single
Mn decay event?
(c) If all the energy released is assumed to be heat, how much heat (in J) is evolved in one year by the decay of the 1.00 mol sample of "Mn from part (a)?
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