Assuming complete dissociation of the solute, how many grams of KNO3 must be added to 275 mL of water to produce a solution that freezes at −14.5 ∘C

108.43 grams KNO₃

Explanation:

To solve this problem we use the formula:

Where

We solve for b:

Using the given volume of water and its density (aprx. 1 g/mL) we calculate the necessary moles of KNO₃:

Finally we convert KNO₃ moles to grams, using its molecular weight:

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.