A) \[0.1M\]
B) \[1M\]
C) \[0.01\,M\]
D) \[0.001\,M\]
Correct Answer: A
Solution :
\[M=\frac{w\times 1000}{m\times \text{Volume }\,\text{in}\,\,ml.}\]\[=\frac{1\times 1000}{40\times 250}=0.1\,M.\]
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