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Scubadiver117x
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[*] posted on 17-9-2006 at 10:18
Science Question

A mass of a certain radioactive element decays at a rate of 18.5 billion disintegrations per minute.What is its activity in curies (Ci)?...in becquerels (Bq)?
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Nerro
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[*] posted on 17-9-2006 at 10:31


18.5 GBq which is about 0.5 Curie... Because a Bq equals an emmision per second and a curie equals 37 billion Bq.

Do your own homework in the future!

[Edited on Sun/Sep/2006 by Nerro]



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Scubadiver117x
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[*] posted on 17-9-2006 at 10:41


If I could do my own homework I wouldn't need this LOL!!! Does anyone have a more complete answer?
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[*] posted on 17-9-2006 at 10:56


And don't crosspost!



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[*] posted on 17-9-2006 at 12:51


What do you mean, more complete?

1 disintegration/second = 1Bq

G, giga, is a prefix for 1 billion. 18.5 billion = 18.5Gx

18.5GBq/37GBq=~.5Ci
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