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QUESTION
7. A specific radioactive isotope has a half-time of 30.2 minutes. How long will it take this isotope to decay to 1/8 of its original amount?
7.
A specific radioactive isotope has a half-time of 30.2 minutes. How long will it take this isotope to decay to 1/8 of its original amount?
9. The formula of the ionic compound that forms from two ions ,
A 2+ and R 7-, can be written as AxRy.
What is the value for the x?
