When 40.0 mL of 1.00 M H2SO4 is added to 80.0 mL of 1.00 M NaOH at 20.00°C in a coffee cup calorimeter, the temperature of the aqueous solution increases to 29.20°C. If the mass of the solution is 120.0 g and the specific heat of the calorimeter and solution is 4.184 J/g • °C, how much heat is given off in the reaction?
Use q equals m C subscript p Delta T..

A). 4.62 kJ
B). 10.0 kJ
C). 14.7 kJ
D). 38.5 kJ

4.62 kJ of heat is given off in the reaction.

Explanation:

Let's assume specific heat of calorimeter is negligible.

So, amount of heat given off, q = heat absorbed by solution

                                                    = ()

where, m is mass, C is specific heat and is change in temperature.

So, q =

         = 4619 J

         = 4.62 kJ (3 sig. fig.)

Option (A) is correct

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 .