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.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.