Ineed due

barium chloride is reacted with sodium:
1) if 12.2 mol of barium chloride reacts, determine the moles of sodium reacting. how many moles of each product are produced?

2) if 0.016 mol of sodium recats, determine the moles of barium chloride reacting. how many miles of each product are produced?

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 think is conclusions.i think so

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )