In the equation ca(s) + 2h2o(l) --> ca(oh)2(aq) + h2(g) list each element used as a reactant, and tell how many atoms of each are needed for this reaction.

What happens when chlorine reacts with bromine? a. electrons move from the chlorine atoms to the bromine atoms. b. electrons move from the bromine atoms to the chlorine atoms. c. electrons are shared between the chlorine atoms and the bromine atoms. d. electrons become delocalized among the atoms.

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?