Answer: B.)
Explanation: Heat flows from pan to sounroundings
Answer:
before
1. Prepare a handy emergency supply kit
2. Know the earthquake hazard in your area
3. Familiarize yourself with the exit routes
During
1. Do the DUCK, COVER AND HOLD.
2. stay away from trees and posts.
3. stay clam
4. Don't enter damaged buildings
After
1. Check yourself and others for injuries
2. Monitor news through radio and Tv.
Hope this will help you.
This is a question about the colligative property known as freezing point depression. Freezing point depression (the amount the normal freezing point of the solvent is decreased) can be calculated with this equation:
ΔT = i Kf<span> m
</span>
Where i (the van't Hoff factor) is the degree of dissociation of the solute, Kf is the freezing point depression constant, and m is the molality of the solution.
Here i = 2 (KCl dissociates into 2 ions, K+ and Cl-), Kf = 1.86 C/m (for water), and m = 0.743m).
ΔT = 2 x 1.86 C/m x 0.743m = <span>2.764C
</span>
That means the freezing point of the solution is 2.764C less than the pure solvent (water), making it 0C - 2.764C = -2.764C.
