The number of molecules of hydrogen will be required to produce 1.60 mol of water are 9.6×10²³.
Stoichiometry of the reaction gives idea about the relative amount of moles of reactants and products present in the given chemical reaction.
Given chemical reaction is:
2H₂ + O₂ → 2H₂O
From the stoichiometry of the reaction,
2 moles of hydrogen = produces 2 mole of water
1.6 moles of hydrogen = produces 1.6 mole of water
As we know that in 1 mole of any substance 6.022×10²³ entities of that substance are present.
In 1.6 mole of H₂ gas = (1.6)(6.022×10²³) = 9.6×10²³ molecules of hydrogens are present.
Hence 9.6×10²³ molecules of hydrogens are present.
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