Using the balanced equation below, how many moles of water can be produced when 4 grams of Hydrogen react?

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.

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