Iron metal reacts with hydrochloric acid as follows:
2Fe(s) + 6HCl(aq) + 2FeCl3(aq) + 3H2(g)
If 2.40 mol of iron react with excess HCI, and 2.00 mol of H2 are
collected, what is the percent yield of the reaction?
100%
55.6%
83.3%
120%
66.7%

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

What three things does a balanced equation show you?

Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.