The mass of NH _ 3 produced when 131 . 8kg of cyclohexane...

$RCHO + 2\left[Ag{\left({NH}_{3}\right)}_{2}\right]OH \to {RCOONH}_{4} + 2Ag + 3{NH}_{3} + {H}_{2}O$

The $RCHO$ is cyclohexane carbaldehyde (${C}_{6}{H}_{11}CHO$). The molar mass is$112g$.

The number of moles of cyclohexane carbaldehyde$= \dfrac{131 . 8 \times {10}^{3}}{112} = 1 . 176 \times {10}^{3}mol$

$1$ mole of aldehyde produces $3$ moles of ${NH}_{3}$

$1 . 176 \times {10}^{3}$ mol aldehyde will produce

$= 3 \times 1 . 176 \times {10}^{3}$ moles of ${NH}_{3}$

Mass of ${NH}_{3}$ produced $= 3 \times 1 . 176 \times {10}^{3} \times 17$

$= 59 . 97 \times {10}^{3}g$

$\approx 60kg$