Which of the following best describes an electron? It has no charge and about the same mass as a proton.

It has a positive charge and much more mass than a neutron.

t has a negative charge and much less mass than a proton.

It has a negative charge and about the same mass as a neutron.

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 the answer is terrae but not 100 percent sure. ▓▬▬ §

the maximum mass of nh3 is nh3 in grams