James is using a microscope to look at some bacteria After a few minutes, he notices that one of the cells has split into two identical cells which part of Cell Theory does his observation support? • Cells are the basic unit of life
All living things are made of cells
All cells come from pre-existing cells
There are two types of cells, prokaryotes and eukaryotes

C

Explanation:

iron and sleel

make siroeel

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 !