Why does increasing the concentration of reactants increase the reaction
rate?

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron

How is the use of hydroelectric power related to the sun

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?