\[1.0\,gm\] radioactive sodium on decay becomes \[0.25\,gm\] in 16 hours. How much time \[48\,gm\] of same radioactive sodium will need to become \[3.0\,gm\]

\[1.0\,gm\] radioactive sodium on decay becomes \[0.25\,gm\] in 16 hou

1.	\[1.0\,gm\] radioactive sodium on decay becomes \[0.25\,gm\] in 16 hours. How much time \[48\,gm\] of same radioactive sodium will need to become \[3.0\,gm\]
A.	48 hours
B.	32 hours
C.	20 hours
D.	16 hours
Answer» C. 20 hours

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\[1.0\,gm\] radioactive sodium on decay becomes \[0.25\,gm\] in 16 hours. How much time \[48\,gm\] of same radioactive sodium will need to become \[3.0\,gm\]

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