To sterilize a 20.0-g glass baby bottle, we must raise its temperature from 17.0°C to 95.0°C. How much heat transfer is required? The specific heat of glass is 840 J/(kg · °C).
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
![**Heat Transfer Calculation for Glass Baby Bottle Sterilization**
*Welcome to our educational section on heat transfer calculations! In this example, we will calculate the amount of heat needed to sterilize a glass baby bottle.*
*Problem Statement:*
To sterilize a 20.0-g glass baby bottle, we must raise its temperature from 17.0°C to 95.0°C. How much heat transfer is required? The specific heat of glass is 840 J/(kg・°C).
*Given Data:*
- Mass of the glass baby bottle (m): 20.0 g = 0.020 kg
- Initial temperature (T₁): 17.0°C
- Final temperature (T₂): 95.0°C
- Specific heat capacity of glass (c): 840 J/(kg・°C)
*Formula:*
The heat energy (Q) required to raise the temperature can be calculated using the formula:
\[ Q = m \cdot c \cdot \Delta T \]
where:
- \( \Delta T \) = T₂ - T₁ = 95.0°C - 17.0°C = 78.0°C
*Calculation:*
\[ Q = 0.020 \, \text{kg} \times 840 \, \frac{\text{J}}{\text{kg} \cdot ^\circ \text{C}} \times 78.0 \, ^\circ \text{C} = 1310.4 \, \text{J} \]
The amount of heat transfer required to sterilize the glass baby bottle is **1310.4 J**.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5362cbea-9427-4b2b-99cb-57a208edd853%2F3bf6a045-6f27-4dc9-9558-1c32a514eb3c%2F8dco2ic.png&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
