Achemist makes two different compounds from the same two elements: tin and chlorine. he reacts 50.0 grams of tin with 29.87 grams of chlorine. there are no leftovers from either element. he then reacts 50.0 grams of tin with 59.74 grams of chlorine. once again, there are no leftovers. if the first compound has two atoms of chlorine in the molecule, how many atoms of chlorine are in a molecule of the second compound

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 !

let that person have a turn to speak : )

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.

answer; 4 electrons;