Density of a solution containing \( x \% \) by mass of \( \mathrm{H}_{2} \mathrm{SO}_{4} \) is \...

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Density of a solution containing \( x \% \) by mass of \( \mathrm{H}_{2} \mathrm{SO}_{4} \) is \( y \). The normality is
a. \( \frac{x y \times 10}{98} \)
b. \( \frac{x y \times 10}{98 y} \times 2 \)
\&. \( \frac{x y \times 10}{98} \times 2 \)
d. \( \frac{x \times 10}{98 y} \)
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