The image below shows a group of wind turbines, which can be used to produce electrical energy. Several transfers of energy must occur to produce this electrical energy. First, an uneven transfer of ( blank )energy to Earth's atmosphere produces wind energy. As the wind rotates the blades of a turbine, ( blank )energy is transferred to the turbine. This transferred energy then turns generators inside the turbine to produce electrical energy.

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 !

personal, she chose to do it.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a