HELP PLEASE lol, I just need a couple answers but I can't find this one anywhere, pic of question down below. :)

In which phase(s) do the molecules take the shape of the container?

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?

Calculate the number of molecules present in 0.750 mol of mgo.