If 85 g of KBr were dissolved in 100g of water at 60°C, the solution would be
240
220
200
180
160
NaCIOS
140
Solubility
(g/100 g of H20)
KBr
NaCI
20
40
100
120
60 80
Temperature
(C)

Explanation:

The data are garbled and difficult to decipher so i have to work with other data.

I will use the graph attached.

There, I have drawn two red lines that intersect at T = 60ºC and Solubility close the the middle point between 80 and 90 g/100g of H₂O, but a little bit above (closer to 90 than to 80 g/100g of H₂O).

That means that the solubility at 60ºC is close to 85g/100g of H₂O but a little bit above.

Then, if 85 g of KBr were dissolved in 100g of water at 60°C, the solution would be unsaturated: it can dissolve a little bit more of solute.

To understand how you use the solubility curve graphs:

For a given temperature:

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.