What went wrong – balancing chemical equations
your friend and classmate made a mistake when balancing the following chemical equation.
original unbalanced equation:
fe + h20 -> fe3o4 + h2
your classmate’s incorrectly balanced equation:
fe3 + 4h2o -> fe3o + 4h2
analyze where your friend went wrong when trying to balance the equation. then, instruct him or her on how to balance the equation correctly. also, show the final balanced equation by inserting an equation at the end of your response.

Which fact represents evidence for the big bang theory?

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

What type(s) of intermolecular forces are expected between ch3ch2cooh molecules? dipole forces, induced dipole forces, hydrogen bonding