The u. s. navy has a system for communicating with submerged submarines. the system uses radio waves with a frequency of 76s^-1. what is the wavelength of the radiation in meters? in miles?

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?