The formula H4N2O3 represents a salt containing ammonium (NH4+) and nitrate (NO3-) ions. These ions are often present in fertilisers because they effectively deliver nitrogen to plants.
The empirical formula H4N2O3 represents a salt used in fertilisers and it contains hydrogen, nitrogen, and oxygen. In this salt, the ions present are the ammonium ion (NH4+) and the nitrate ion (NO3-). Hydronium and nitrogen dioxide might also be present in the compound. However, the most relevant ions are generally the ammonium and the nitrate ions, because they are often used in fertilizers due to their abilities to effectively deliver nitrogen to plants.
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B) exothermic
C) reversible
D) irreversible
Answer: B) exothermic
Explanation:
Endothermic: The chemical reactions in which reactants form products by absorption of energy are called as endothermic reactions.
Exothermic : The chemical reactions in which reactants form products along with release of energy are called as exothermic reactions. Thus if walls turn hot that means the energy has been released.
Reversible: The chemical reactions in which reactants form products and products can also be converted back to reactants are called as reversible reactions.
Irreversible: The chemical reactions in which reactants form products but products can not be converted back to reactants are called as irreversible reactions.