100 cm³ of 2.0 mol dm‐³ hydrochloric acid is poured into 100 cm³ of 2.0 mol dm‐³ sodium hydroxide solution. The initial and final temperature are immediately recorded as shown below. [Specific heat capacity = 4.2 J/g°C, density of solution = 1.0 gcm-3]. What is the value of heat released in the reaction?

initital temperature of hydrochloric acid: 29.0°C

initial temperature of sodium hydroxide solution: 29.0°C

highest temperature of the mixture: 35.0°C