The specific rate constant, k, for radioactive beryllium–11 is 0.049 – McqOptions

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1.	The specific rate constant, k, for radioactive beryllium–11 is 0.049 s– What mass of a 0.500 mg sample of beryllium-11 remains after 28 seconds?
A.	0.125 mg
B.	0.250 mg
C.	0.0625 mg
D.	0.375 mg
Answer» B. 0.250 mg

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