Someone plz help me :(

V1t2 = v2t1 is an expression of who’s law

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

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?