Asingle atom of iodine is very reactive because it only has seven electrons in its
outer shell.
which type of bond is atom of iodine likely to form?
van der waals
hydrogen
covalent
ionic

a

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 !

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

i wish i could but this one is weird give me abc and i can solve it.