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Hydrogen chloride gas is sent into a 100meter tube from one end 'A' and ammonia gas from the other end 'B' under similar conditions. At what distance from 'A' will be the two gases meet (in meters)

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4.048 cm

40.48 cm

40.48 m

4.048 m

answer is C.

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Detailed Solution

$\frac{r_{{NH}_{3}}}{r_{HCl}} = \sqrt{\frac{M_{HCl}}{M_{{NH}_{3}}}} = \sqrt{\frac{36.5}{17}}$

$\begin{matrix} \frac{100 - x}{x} = 1.465 \\ x = 40.48 \end{matrix}$

$x = 40.48$

Then meet at 40.48m from end A.

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