A) \[3.0\times {{10}^{-8}}M{{L}^{-1}}\]
B) \[2.5\times {{10}^{-7}}M{{L}^{-1}}\]
C) \[2.8\times {{10}^{-9}}M{{L}^{-1}}\]
D) \[2.5\times {{10}^{7}}M{{L}^{-1}}\]
Correct Answer: C
Solution :
\[\frac{2.8\times {{10}^{-10}}}{0.1}=2.8\times {{10}^{-9}}M{{L}^{-1}}\].
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