Qual é a distribuição eletrônica, em subníveis, para o cátion Ca2+ (Dado: n atômico do cálcio=20.) a)1s2 2s5 2p6 3s2 3p6 4s2 b)1s2 2s2 3s2 3p6 3d2 c)1s2 2s2 2p6 3s2 3p6 d)1s2 2s2 2p6 3s2 3p6 4s2 3d2 e)1s2 2s2 3s2 3p4 4s2

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

c)red bank

explanation:

red bank is a borough in monmouth county, new jersey, incorporated in 1908 and located on the navesink river, the area's original transportation route to the ocean and other ports.

i think slash and