Explanation:
The energy released can be calculated using the formula Q = mcΔT; here Q is the heat energy transferred (in joules), m is the mass of the liquid being cooled (in grams), c is the specific heat capacity of the liquid (joule per gram degrees Celsius), and ΔT is the change in temperature.
since m = 19.8 g
c = 4.184 J/g ·°C
ΔT = 33.3 °C - 28 °C = 5.3 °C
⇒ Q = (19.8 g) (4.184 J/g ·°C)(5.3 °C)
Q = 439.07 J
