In the process described by the woman, why is the coal burned
A: To produce a gas containing carbon and hydrogen.
B: To remove impurities from methanol.
C: To heat the reactors.
D: To prevent dangerous gases from formin
A: To produce a gas containing carbon and hydrogen.
B: To remove impurities from methanol.
C: To heat the reactors.
D: To prevent dangerous gases from formin
举一反三
- Among the gases in the atmosphere, only the concentration of carbon dioxide may result in preventing heat around the Earth from escaping.
- Ways to produce hydrogen fuel include producing it from nuclear power, biomass, algae, artificial photosynthesis, direct solar and coal gasification.
- Why is more earth's heat blocked from escaping with more carbon dioxide in the atmosphere A: Carbon dioxide prevents the sun's energy from going back into space. B: Carbon dioxide radiates the sun's energy onto the earth. C: Carbon dioxide produces more heat in the atmosphere. D: Carbon dioxide takes in the sun's energy at infra-red wavelengths.
- They took _______ measures to prevent poisonous gases from escaping.
- Solar panels, wind turbines, hydro power and geothermal energy and hydrocarbons (natural gas or coal) can all be used to produce hydrogen (a primary energy).