Help! I don't know if it's abrasion or ice wedging A rock that is exposed to heating and cooling over and over again will eventually crack and break into smaller pieces. This is an example of what type of mechanical weathering?
A abrasion
B acid rain
C ice wedging

i need to know too so plz help me

Explanation:

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 !

no but i do not usually comment or use my voice that much when it comes to social media