posted by KRYSTAL .
IN A BALANCED CHEMICAL EQUATION,THE MASS OF THE REACTANTS IS EQUAL TO
A.ATOMS IN A MOLECULE
B.ATOMIC MASS OF THE ELEMENTS
C.VOLUME OF THE PRODUCTS
D.MASS OF THE PRODUCTS
I would choose d also.
Looks like it's D, but B is quite goofy. If they mean the mass of the elements in the reactant side only, then I think it's true, of course that also including the number of moles of each element in the balanced equation.
Just a side note, in a real world, D is never true, it is only an ideal concept in a "perfect" world.