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H 2 + N 2 NH 3. 3H 2 + N 2 2NH 3. 3H 2 + N 2 2NH 3. +. 3H 2 + N 2 2NH 3. 3H 2 + N 2. 3H 2 + N 2. N 2 + 3H 2 2NH 3. 9H 2 + 3N 2 6NH 3. Stoichiometry:. How and why can a chemical equation give us information for calculating quantities
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