Water has a density of 1.0 g/mL. Which of these objects will float in water .. Object A: mass 50.Og; volume 60.8 ml. Object B: mass 65.2g ; volume
42.1 mL. Object C: mass 100.0g: volume 20.0 mL *

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 !

what does the table look like

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error