Energy content of fuels

Question 1

How to work out energy?

Answer 1

Energy= mass X S.H.C X change temperature

Question 2

What’s the word equation for combustion?

Answer 2

Fuel + oxygen —⟩ carbon dioxide + water

Question 3

What’s the equation for burning methane?

Answer 3

CH4 + O2 —⟩ CO2 + H2O

CH4 + 2O2 —⟩ CO2 + 2H2O

Question 4

What is energy measured in?

Answer 4

Joules (J)

1000= 1 kilojoule (Kj)

Question 5

What are the hazards of fuels?

Answer 5

Flammability

Toxicity

Risk of explosion

Harmful effects of incomplete combustion (carbon monoxide)

Pollution - sulphur impurities cause acid rain

             - carbon dioxide cause global warming
             - soot