If 80g KNO(3) is mixed with 100g water at 30 degrees C how much will not dissolve?

Do you have a table or a graph that will tell you the solubility of KNO3 @ 30 C?

To determine how much KNO3 will not dissolve in water at a given temperature, we need to know the solubility of KNO3 at that temperature. The solubility of KNO3 refers to the maximum amount of solute (in this case, KNO3) that can dissolve in a specified amount of solvent (water) at a given temperature.

Since you provided a temperature of 30 degrees Celsius, we can look up the solubility of KNO3 at this temperature. According to available data, the solubility of KNO3 in water at 30 degrees Celsius is approximately 167g/100g water.

Now, let's calculate if there will be any KNO3 that won't dissolve:

1. Calculate the maximum amount of KNO3 that can dissolve in 100g of water at 30 degrees Celsius:
Solubility of KNO3 = 167g/100g water
Maximum amount of KNO3 that can dissolve = (167g/100g water) x 100g water
Maximum amount of KNO3 that can dissolve = 167g KNO3

2. Compare the maximum amount of KNO3 that can dissolve (167g) with the amount provided (80g):

- If the amount provided (80g) is greater than the maximum amount that can dissolve (167g), there will be some KNO3 left undissolved.
- If the amount provided (80g) is less than or equal to the maximum amount that can dissolve (167g), then all of the KNO3 will dissolve.

Therefore, since 80g is less than 167g, all of the 80g of KNO3 will dissolve in 100g of water at 30 degrees Celsius.