The maximum mass of a solid that dissolves in 100 g100\text{ g}100 g of water at a given temperature is called its solubility.
The table gives the solubility of Compound Z at six different temperatures.
| Temperature in ∘C^\circ\text{C}∘C | 20 | 30 | 40 | 50 | 60 | 70 |
|---|---|---|---|---|---|---|
| Solubility in g per 100 g100\text{ g}100 g of water | 21 | 29 | 39 | 51 | 65 | 81 |
Plot the points on the grid and draw a curve of best fit.
Extend your curve to find the solubility of Compound Z at 10∘C10^\circ\text{C}10∘C.
Use your graph to find the maximum mass of Compound Z that could dissolve in 250 g250\text{ g}250 g of water at 45∘C45^\circ\text{C}45∘C.
