A 75.0 g sample of granite initially at 92.5oC is immersed into 60.0 g of water initially at 22.2oC. Determine the final temperature (in oC) when they reach thermal equilibrium. Assume no heat loss to the surroundings. Specific heats: granite = 0.790 J/(goC), water = 4.184 J/goC

Explanation:

There are two heat transfers involved: the heat lost by the granite and the heat gained by the water.

According to the Law of Conservation of Energy, energy can neither be destroyed nor created, so the sum of these terms must be zero.

Let the granite be Component 1 and the water be Component 2.

Data:  

For the granite:

For the water:

Calculations

(a) The relative temperature changes

(b) Final temperature of water

whats the meaning of /

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.