The solubility of potassium nitrate at 20¡ãC is 340g/litre.
How many grams of KNO3 can dissolve in 185ml of water?
340 x (185/1000) = ?
62.9grams
To calculate the number of grams of potassium nitrate (KNO3) that can dissolve in 185 ml of water, we can use the solubility provided.
Given:
Solubility of KNO3 at 20°C = 340 g/liter
Volume of water = 185 ml
First, we need to convert the volume of water to liters since the solubility is given in grams per liter.
1 liter = 1000 ml
Therefore, 185 ml of water is equal to 185/1000 = 0.185 liters.
Now, we can use the solubility to determine the amount of KNO3 that can dissolve in 0.185 liters of water.
Amount of KNO3 = Solubility x Volume of water
Amount of KNO3 = 340 g/liter x 0.185 liters
Calculating this:
Amount of KNO3 = 62.9 grams
Therefore, 62.9 grams of KNO3 can dissolve in 185 ml of water at 20°C.