Which of the following is true statement about isotopes? . a.. the number of protons always equals the number of neutrons in all isotopes.. b.. the number of protons never equals the number of neutrons in an isotope.. c.. different isotopes for the same element will always have the same numbers of neutrons.. d.. different isotopes for the same element always have the same number of protons..

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 !

answer: the primary difference between a hypothesis and a theory is that b hypothesis is falsifiable, but a theory has been proven to be correct. theory is an explanation of something that is happening but hypothesis is a guess of something that can happen

explanation: