Stoichiometry
Elements in a periodic table are arranged in order of their

Mass number
Atomic weight
Metallic characteristics
Atomic number

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Stoichiometry
Heat of reaction is not influenced by

The route/method through which final products are obtained
Whether the reaction is carried out at constant temperature or constant pressure
None of these
The physical state (e.g., solid, liquid or gaseous) of reactants and products

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