How are the dark reactions that occur in plants dependent on the light reactions? a.
The chemical energy used in the dark reactions is produced in the light reactions.
b.
The light reactions produce the oxygen necessary for the dark reactions to proceed.
c.
Light energy absorbed during the light reactions is used directly in the dark reactions.
d.
During the light reactions, carbon dioxide is converted to sugars, which are used during the dark reactions.

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 !

so what is the problem with your lab report and whats the subject of the lab report? i will you