What factors influence the gravitational forces between objects?

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 mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?