What is the correct answer?

What overall charge must all compounds have

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

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?