Which of the postulates of dalton's atomic theory explains why we can calculate a theoratical yield for a chemical reaction?

Postulate 4

Explanation:

Dalton's atomic theory-

According to the postulate number four of the  Dalton's atomic theory , the theoretical yield can be calculated for the chemical reaction .

Since ,

A compound is formed by atoms or ions or by elements .

And these atoms combine in a small , simplest , whole number , to form the compound .

And , these numbers of the atoms are always fixed for a particular compound .

Postulate 4 (A compound consists of atoms of two or more elements combined in a small, whole-number ratio. In a given compound, the numbers of atoms of each of its elements are always present in the same ratio).

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.