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■ LiNO3 = Lithium nitrate Inorganic compound with the formula LiNO₃. It is the lithium salt of nitric acid. It is obtained from the reaction of lithium carbonate or lithium hydroxide with nitric acid.

■ CaO = Calcium oxide (CaO) or quicklime is a kind of chemical compound with a wide range of uses.

■ C2N2 = Cyanogen is the chemical compound with the formula formula (CN). It is a colorless, toxic gas with a pungent odor. The molecule is a pseudohalogen. Cyanogen molecules consist of two CN groups - similar to diatomic halogen molecules such as Cl₂, but much less oxidizing.

■ MgSO4 = Magnesium sulfate is an inorganic salt (chemical compound) with the chemical formula MgSO4, containing magnesium, sulfur and oxygen.

■ Fe2O3 = Iron Oxide; It has compounds such as iron chromate (FeCrO4), Iron Phosphate (Fe2P), Iron Sulphide (FeS). Iron oxides in black iron oxide (FeO), red (Fe203) and black (Fe3O4) colors give beige, yellow, brown, red, black colors according to their additive ratios.

■ P3N5 = Triphosphorus pentanitride is an inorganic compound with the chemical formula P formulaN₅. Containing only phosphorus and nitrogen, this material is classified as a binary nitride. No application has been developed for this material. It is a white solid, but samples often appear colored due to impurities.

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the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.