# Question #1497c

##### 1 Answer

At about

#### Explanation:

In order to be able to answer this question, you must have some information about how the solubility of potassium nitrate,

A useful tool to have at your disposal is the **solubility graph** for potassium nitrate, which looks like this

Your goal is to find the temperature at which *grams per* *of water*, which means that you'll have to convert the volume of water to grams.

Since no additional information was provided, you can **assume** that the density of water is equal to

#100 color(red)(cancel(color(black)("mL"))) * "1.0 g"/(1color(red)(cancel(color(black)("mL")))) = "100 g"#

Now, look for **solubility curve**, which is shown here in

From the point of intersection, draw a vertical line until you intersect the horizontal axis, i.e. the axis that shows the temperature.

Your line should fall somewhere in between

You can thus say that you can dissolve