Answer:
Explanation:
I can do it, but it may not be right. The atoms/ions and charges are all balanced, but I'm just not sure.
12Br2 + 12H20 ==> 4BrO3^- +20Br- + 24H+ You can divide this by 4
3Br2 + 3H20 ==> BrO3^- + 5Br^- + 6H+
Element/ion Left Right
Br 3*2 = 6 1 + 5 = 6
H 6 6H+
O 3 3
Charges 0 -1 - 5 + 6 = 0
The H+ represents an Acid. The problem is it says that the reaction takes place in an acid. It is so long ago, I don't remember if this includes being on the right.
Anyway it is balanced.
Answer:
mg atom have 12 election and mg ion have 10 election
The original source of the soil organic matter is plant tissue. In the forest, organic matter is added in the soil mainly in the form of fallen leaves. Under natural conditions, the tops and roots of trees, shrubs, grasses and other native plants annually supply large quantities of organic residues.
Answer:
41.4%
Explanation:
The salt copper II fluoride tetrahydrate is a hydrated salt. A hydrated salt is a salt that has some molecules of water of crystalization attached to its structure. The formula of the salt is CuF2.4H2O
The first step is to calculate the molecular mass of the compound as follows
[64 + 2(19) + 4((2×1) + 16)] = [64 + 38 + 72]= 174gmol-1
Mass of water of crystallization= 4((2×1) + 16) = 72 g
Percentage by mass of water of crystallization= 72 / 174 ×100
Percentage by mass of water if crystalization = 41.4%
