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Homework Statement
"After cleanup at 3 mile island approximately 400,000 gal of radioactive water remained in the basement of the contaminated building. The principle sources of radioactivity were 137 Cs at 156E-6 Ci/cubic cm. How many atoms per cubic cm were in the water ?
Homework Equations
Not sure...
The Attempt at a Solution
6.022E23 * 156E-6/137 = 6.86E17
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