3fe + 4h2o < => fe3o4 + 4h21) how many molecules of h2 are produced? 2) how many oxygen atoms are found in the products? 3) how many moles of fe3o4 are formed? 4) what is the ratio of the number of moles of fe atoms to the moles of h2o molecules? 5) how many hydrogen atoms are found in the reactants? choices for 1, 2, 3, and 5: 0, 1, 2, 3, 4choices for 4: 1/4, 3/4, 4/4

3Fe + 4H2O <=> Fe3O4 + 4H2

1) How many molecules of H2 are produced? 4

2) How many oxygen atoms are found in the products? 4

3) How many moles of Fe3O4 are formed? 1

4) What is the ratio of the number of moles of Fe atoms to the moles of H2O molecules? 3/4 or 3:4

5) How many hydrogen atoms are found in the reactants? 8

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.