In a calorimetry experiment, an unknown metal with a mass of 27.4 g that has been in heated to a temperature of 94.0 °C is placed in a coffee cup calorimeter containing 79.8
g of water initially at a temperature of 22.6 °C. After the water and metal have reached
thermal equilibrium, the final temperature reading of the calorimeter is 28.7 °C.
Calculate the specific heat of the unknown metal in J/gºC.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.