What is the total number of moles of atoms in pb(c2h3o2)2?

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?

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