At 20°C, how many grams of potassium nitrate can be
dissolved in 100 g of water?

32 g of potassium nitrate can be dissolved in 100 g of water at 20°C.

Explanation:

The measure of amount of any kind of solute getting dissolved in any solvent is termed as solubility. The solubility can be measured as the ratio of mass of the solute to the mass of the solvent at room temperature. It is also known that the solubility of any solution depends on the temperature. When the concentration of solute exceeds the solubility limit, the solution becomes saturated.

As it is known from the solubility graph of potassium nitrate salt that at 20°C, 32 g/100 g is the solubility limit of potassium nitrate in 100 g of water.

So this means that 32 g of potassium nitrate can be dissolved in 100 g of water at 20°C.

At 20 °C, 30 grams of potassium nitrate can be dissolved in 100 g of water.

Explanation:

When 30 grams of potassium nitrate, KNO3 , is dissolved in 100

grams of water at 20 °C, the solution can be described as saturated.

it's c. elements are placed in rows based on how may valencies electrons have.