1. What would the relative humidity be if you had a 500 ml beaker with 200 ml of water in it? 2. How much water would the 500 ml beaker require to represent 90% humidity?

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?