Mason notices that his boat sinks lower in the water in a freshwater lake than in the ocean. what could explain this

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 percent by mass of oxygen in fe2o3

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?