What is the longest compound name? How many atoms are in the compound?

its called titin, but it has a much much longer name that i couldn't find in full

Explanation: C169,719H270,466N45,688O52,238S911

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titin (Methionylalanylthreonyl...leucine)  i couldnt

find the rest

answer; i believe the correct answer is (solid gold);

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 !