When an oxide of Potassium is decomposed, 19.55g of K AND 4.00g of O are obtained. What is the empirical and molecular formula?

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?

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

In a copper wire, a temperature increase is the result of which of the following