What is a disadvantage of using a space-filling model to show a chemical compound? space-filling models provide a two-dimensional view of the molecule. space-filling models do not identify the number and type of bonds. space-filling models do not show all atoms in the molecule. space-filling models show information about composition but not structure.

B) Space-filling models do not identify the number and type of bonds

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 !

i have no clue hope you find the answer