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Physical and Chemical Changes — CHEMISTRY STD 7 — Question

ICSE BoardEnglish MediumSTD 7CHEMISTRYPhysical and Chemical Changes1 Mark
Question
Balance the equations.
$N _2+ H _2 \rightarrow NH _3$
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Answer

$N _2+3 H _2 \rightarrow 2 NH _3$

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