If a balanced reaction takes place in a sealed container, how should the mass before the reaction begins compare to the mass after the reaction ends will always be equal to the reactant or same.
A balanced reaction or chemical reaction is that the amount or mass of the reactant will always be equal to the amount of the product after the reaction is complete.
If A and B are two reactant then their concentration will be equal to the product which is C and D the number of moles taking participate is also equal.
Therefore, a balanced reaction takes place in a sealed container, the mass before the reaction begins compare to the mass after the reaction ends will be equal as reactant or will be the same.
Learn more about balanced reaction, here:
https://brainly.com/question/14263388
#SPJ2
