The diagrams show the particles of a substance.
which statement best describes the process that the diagrams show?
o a solid loses kinetic energy to become a liquid and then becomes a gas.
a solid gains kinetic energy to become a liquid and then becomes a gas.
o agas loses kinetic energy to become a liquid and then becomes a solid.
o a gas gains kinetic energy to become a liquid and then becomes a solid.

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 !

d.) circle motion requires a force to give it a centripetal acceleration.