Which substance has a chemical symbol that is derived from a latin name? a. potassium b. hydrogen c. oxygen d. calcium

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

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?

Name the element in group 17, period 2. (periodic table)