Hydroquinone is an organic compound commonly used as a photographic developer. it has a molecular weight of
110 g/mole and a composition of 65.45% c, 5.45% h, and 29.09% o. calculate the molecular formula of hydroquinone.

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?