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Hydrogen and water react to produce oxygen the reaction releases energy.
A fuel cell is an electrical cell that's supplied with a fuel and oxygen and energy
from the reaction to generate electricity.
Fuel cells don't get run down or need recharging it will produce energy as long as
fuel is supplied.
Hydrogenoxygen fuel cells are more efficient than power stations and batteries
their efficiency is greater than 80%
There are less stages of the process of generating electricity so there are fewer
places for the energy to be lost as heat.
Energy isn't lost through friction as there are no moving parts (like a car engine.
Fuel cells don't produce any greenhouse gases, sulphur dioxides, carbon
monoxide. They only produce water and heat.
This could be the end of petrol and diesel cars and Lorries.
However its unlikely as:
Hydrogen is a gas and takes up lots of space to store
It's very explosive so it's difficult to store safely
Measuring energy content of fuels
Calorimetric experiment involves heating water by burning a liquid fuel.
Fuel burned + temperature change = energy
Mass of fuel burned = final mass of fuel and burner initial mass of fuel and