What is an example of the musculoskeletal system and the nervous system interacting to maintain homeostasis? A.
The brain sending a message to move a muscle

B.
A leg muscle providing energy to the brain

C.
A rib bone moving oxygen and glucose to the brain

D.
The skull providing nutrients for brain growth and repair.

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 !

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

the answer would be a

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8