When sugar and iron filings are mixed together, you can separate them using a magnet. when sugar and iron filings are mixed and then heated until a chemical reaction occurs, you can a) still separate the iron filings with a magnet. b) no longer separate the iron filings with a magnet. c) sift the mixture to separate out the sugar from the iron. d) dissolve the sugar in water to separate it from the iron.

The answer is D. dissolve the sugar in water to separate it from the iron.

Explanation:

hope this helps :)

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 !

answersilicon (si); oxygen (o);