25 moles of H₂ (hydrogen gas) are required to make 25 moles of H₂O.
What is Stoichiometry ?
Stoichiometry is an important concept which helps us use the balanced chemical equation to measures the amount of reactants and products.
What is Balanced Chemical Equation ?
The balanced chemical equation is the equation in which the number of atoms on the left hand side that is reactant side is equal to the number of atoms on the right hand side that is product side in an equation.
First we have to write the Balanced chemical equation
2H₂ + O₂ → 2H₂O
To produce 2 moles of water, 2 moles of hydrogen are required to produce 25 moles of water.
According to the Stoichiometry
[tex]\frac{2\ \text{moles of}\ H_2}{2\ \text{moles of}\ H_2O} \times 25\ \text{moles of}\ H_2O[/tex]
= 25 moles of hydrogen gas is required
Thus, from above conclusion we can say that 25 moles of H₂ (hydrogen gas) are required to make 25 moles of H₂O.
Learn more about the Stoichiometry here: brainly.com/question/14935523
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