A) 32
B) 64
C) 128
D) 256
Correct Answer: C
Solution :
\[\frac{0.16}{x}\ \times \ \frac{1000}{25}\ =\ \frac{1}{10}\] Þ\[\frac{6.4}{x}\ =\ \frac{1}{10}\ \ \ \ \therefore \ x\ =\ 64\] Mol. wt. = 64 × 2 = 128
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