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Strontium-90 is a dangerous by-product of atomic testing because it mimics the action of calcium in the body. It decay in two β-emissions to give zirconium-90 (nuclear mass = 89.8824 g). a) Write a balanced nuclear equation for the overall decay of Sr-90. b) Calculate ∆m in grams when one mole of Sr-90 decays to Zr-90. c) How much energy (in KJ) is given off by the decay of 6.50 mg of Sr-90?

Strontium-90 is a dangerous by-product of atomic testing because it mimics the action of calcium in the body. It decay in two β-emissions to give zirconium-90 (nuclear mass = 89.8824 g). a) Write a balanced nuclear equation for the overall decay of Sr-90. b) Calculate ∆m in grams when one mole of Sr-90 decays to Zr-90. c) How much energy (in KJ) is given off by the decay of 6.50 mg of Sr-90?

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter18: Nuclear Chemistry
Section: Chapter Questions
Problem 35QRT
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Strontium-90 is a dangerous by-product of atomic testing because it mimics the action of calcium in the body. It decay in two β-emissions to give zirconium-90 (nuclear mass = 89.8824 g).
a) Write a balanced nuclear equation for the overall decay of Sr-90.
b) Calculate ∆m in grams when one mole of Sr-90 decays to Zr-90.
c) How much energy (in KJ) is given off by the decay of 6.50 mg of Sr-90?

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