Answer:
2 moles of water (H₂O)
Explanation:
We'll begin by calculating the number of mole in 4 g of Hydrogen. This can be obtained as follow:
Mass of H₂ = 4 g
Molar mass of H₂ = 2 × 1 = 2 g/mol
Mole of H₂ =?
Mole = mass / Molar mass
Mole of H₂ = 4/2
Mole of H₂ = 2 moles
Finally, we shall determine the number of mole of water (H₂O) produced by the reaction of 4 g (i.e 2 moles) of H₂. This can be obtained as follow:
2H₂ + O₂ —> 2H₂O
From the balanced equation above, we can see that 2 moles of H₂ reacted to produce 2 moles of H₂O.
Thus, 2 moles of water (H₂O) were obtained from the reaction.
