The specific heat of a certain type of cooking oil is 1.75 J/(g-°C). How much heat energy is needed to raise the temperature of 2.03 kg of this oil from 23 °C to 191 °C?
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.
![The specific heat of a certain type of cooking oil is 1.75 J/(g°C). How much heat energy is needed to raise the temperature of 2.03 kg of this oil from 23°C to 191°C?
\[ q = \]
The screen displays a formula box for calculating the required heat energy. The calculation involves using the formula:
\[ q = mc\Delta T \]
where:
- \( m \) is the mass of the substance (in grams),
- \( c \) is the specific heat capacity (\( 1.75 \, \text{J/(g°C)} \)),
- \( \Delta T \) is the change in temperature (\( 191°C - 23°C \)).
An explanation or educational note could follow, detailing how to convert the mass from kilograms to grams and substitute these values into the formula to find \( q \), the heat energy in joules.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd15a2d56-c982-4a4b-8f12-312dac46f35d%2F710248df-1bf3-4ca2-a267-894a64bb1902%2Fgxeyk0g_processed.jpeg&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
