Answer: By using law of conservation of mass.
Explanation:
A balanced chemical equation always follow law of conservation of mass.
This law states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form. This also means that total number of individual atoms on reactant side must be equal to the total number of individual atoms on the product side.
The chemical reaction for the formation of water follows the equation:
[tex]2H_2+O_2\rightarrow 2H_2O[/tex]
Total mass on reactant side: [tex][2(2\times 1)+(2\times 16)]=36g/mol[/tex]
Total mass on product side: [tex][2((2\times 1)+16)]=36g/mol[/tex]
Hence, by using law of conservation of mass.
Stoichiometry is a branch of chemistry, which involves the relationship between reactants and products in a chemical reaction to determine the desired quantity.
Stoichiometry is the process of balancing a chemical reaction using subscripts and coefficients to determine the quantitive result of the reaction.
The coefficients are the numerical digits placed in front of the formulas, such as '2 NO' indicating the two units of nitrous oxide.
The subscripts are the part of the chemical formula that determines the number of atoms of the preceding element. For example, in the chemical formula of [tex]CO_2[/tex], 2 is the subscript.
Thus, the coefficient and subscripts are necessary to write down a balanced chemical equation to determine the result.
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