Stoichiometry Practice ll g. If we wish to make 7.5 mol CO 2 , how many grams of C 8 H 18 will be used?
h. If we wish to make 7.5 mol CO 2 , how many grams of O 2 do we need?
i. If we wish to make 7.5 mol CO 2 , how many grams of H 2 O will be produced?
j. If we have 3.56 g C 8 H 18 , how many grams of O 2 do we need to react with it?
k. If we have 3.56 g C 8 H 18 , how many grams of CO 2 do we produce?
l. If we have 3.56 g C 8 H 18 , how many grams of H 2 O do we produce?
show work please

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 !

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons