What mass of the ethanol is she freezing?

AI Thread Summary
To determine the mass of ethanol being frozen after removing 9.53x10^4 J of heat energy, the technician must use the equation Q = mL, where Q is the heat energy removed, m is the mass, and L is the latent heat of fusion for ethanol. The specific heat capacity of ethanol and its melting point are essential for accurate calculations. Participants in the discussion emphasize the need to reference these values to solve the problem effectively. Understanding the relationship between heat energy and temperature changes is crucial for this calculation. The discussion highlights the importance of gathering the necessary data before applying the equations.
MacoRules94
Messages
4
Reaction score
0
A technician freezes some ethanol by removing 9.53x10^4 J of heat energy from it at its melting point. What mass of the ethanol is she freezing?
 
Physics news on Phys.org


MacoRules94 said:
A technician freezes some ethanol by removing 9.53x10^4 J of heat energy from it at its melting point. What mass of the ethanol is she freezing?

What equation do you think you need to use here? What information do you think you need to have to work out this problem?
 


No idea
 


MacoRules94 said:
No idea

Wouldn't the technician have to lower the temperature to the freezing point? Do you know an equation that related heat energy to temperature?
 


No ida
 


MacoRules94 said:
No ida

Do you know the equations Q=mcΔT and Q=ml ?
 


Yes

Q = Mas x (umm, 4200 for water :) ) x (Tf - To)
 


You will need to get the specific heat capacity of ethanol, the melting and freezing temperatures. Look those up.
 

Similar threads

Find the mass of odium for both solid and liquid state
Replies
9
Views
809
How to calculate freezing time for a moist food by-product (75% water)
Replies
6
Views
629
How Long Does It Take for a Mass to Freeze or Melt?
Replies
2
Views
1K
Why Does Calculating Ethanol's AFR Yield Different Results from Standard Values?
Replies
3
Views
2K
How Much Water Can a 1KW Carnot Engine Freeze in 5 Minutes?
Replies
3
Views
1K
Thermal Expansion of ethanol problem
Replies
7
Views
5K
B Does movement affect H2O freezing temperature?
Replies
16
Views
5K
Calculating time to reduce alcohol in wine using heating method
3
Replies
131
Views
8K
What is the final temperature of ethanol after thermal equilibrium is reached?
Replies
2
Views
6K
Thermodynamic process: freezing
Replies
3
Views
4K

Hot Threads

Recent Insights

Back
Top