Cations have positive charges. Anions have negative charges. What force draws the two together?

One does not belong why? ice, gold ,wood ,diamond and table salt

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?

What is the name of the enzyme that forms at the start of transcription?