Atotal of 2.50 liters of 0.100 m nacl was mixed with 3.00 liters 0.0800 m nacl. assume that the volumes of the solutions add together to give 5.50 liters (volumes may not be additive with more concentrated solutions). what was the molar concentration of nacl in the final solution?

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

im doing test rn im going with 2 but ill give answer if itss wrong,   : )