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

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.