U2-2-4 - Energy From Fuels Flashcards
1
Q
Eh = cm∆T
What is ∆T?
A
Water temperature change (after heating)
Always a positive number
2
Q
Eh = cm∆T
What are the units for m?
A
kg
3
Q
Eh = cm∆T
What is m?
A
Mass of water being heated
(NOT mass of fuel!)
4
Q
Eh = cm∆T
What is the value of c?
A
4.18
(can be found in the data booklet)
5
Q
Eh = cm∆T
What are the units for Eh?
A
kJ (kilojoules)
6
Q
What is the biggest source of error in this type of experiment?
A
Heat loss to surroundings
Not all energy made during combustion is used to heat the water
7
Q
How would you improve this setup to make the experiment more accurate?
A
Add a heat shield/draught shield
This will reduce heat loss to surroundings
