Energy and Fuels

Question 1

Fuel Energy is calculated using [ ]

Answer 1

Calorimetry

Question 2

What type of container do you use for Calorimetry? Why?

Answer 2

Glass or metal container.

Usually copper because copper conducts heat very well.

Question 3

Describe the method of Calorimetry.

Answer 3

1) Put 50 g of water in the copper can and record its temperature
2) Weigh the spirit burner and lid
3) Put the spirit burner underneath the can, and light the wick. Heat the water, stirring constantly until the temp. reaches about 50ᵒC
4) Put out the flame using the burner lid, and measure the final temp. of the water
5) Weigh the spirit burner and lid again

Question 4

How do you work out the energy transferred once you have done calorimetry?

Answer 4

Energy transferred (J) = Mass of water (g) * Specific Heat Capacity of water * Temp change (ᵒC)
Q=mcΔT