Volaic cells produce a positive overall charge what does this indicate

Describe in detail the melting point behavior of the 80: 20 benzoic acid-mandelic acid mixture

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?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.