SULIT me 2k M=0.5/ Satu objek logam berjisim 500 g pada suhu 90 °C diletakkan di dalam sebuah bikar yang mengandun air berjisim 2 kg pada suhu 30 °C. Suhu akhir air di dalam bikar itu ialah 50 °C. [Muatan haba tentu air 4 200 J kg¹ °C¹] A 500 g metal object at 90 °C is placed in beaker containing 2 kg of water at 30 °C. The final temperature the water in that beaker is 50 °C. [Specific heat capacity of water = 4200 J kg"¹ °C] (i) Hitung haba yang diserap oleh air. Calculate the amount of heat absorbed by the water. (ii) Hitung muatan haba tentu logam itu. Calculate the specific heat capacity of the metal.
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![SULIT
9 - 30
Rance
3/2
M= 0.5kg
Satu objek logam berjisim 500 g pada suhu 90 °C diletakkan di dalam sebuah bikar yang mengandun
air berjisim 2 kg pada suhu 30 °C. Suhu akhir air di dalam bikar itu ialah 50 °C.
[Muatan haba tentu air
4 200 J kg¹ °C]
A 500 g metal object at 90 °C is placed in a beaker containing 2 kg of water at 30 °C. The final temperature
the water in that beaker is 50 °C.
[Specific heat capacity of water = 4 200 J kg"¹ °C]
(i) Hitung haba yang diserap oleh air.
Calculate the amount of heat absorbed by the water.
(ii) Hitung muatan haba tentu logam itu.
Calculate the specific heat capacity of the metal.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Facb881f7-a980-4a5b-bc25-6a81faec47c6%2Fc0c0a6fe-99a4-4263-be22-b0fd93c96c33%2Fj1w0utk_processed.png&w=3840&q=75)
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