The third test you read about uses the apparatus shown above to test for conductivity of electricity.
If the bulb lights up, then the substance dissolved
in the water is likely
*Ionic
*covelant

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 4.20 mol fe and 6.70 mol nio(oh) react?