Hydrogen energy is considered a promising new energy. What is hydrogen usually obtained from? A. Coal B. Oil C. Natural gas D. Water 相关知识点: 试题来源: 解析 D。解析:氢能被认为是一种有前途的新能源。氢通常从水中获得。A、B、C 选项都是传统化石能源,不是氢的来源。本题考查对氢能来源...
What is the potential of hydrogen energy? A. To replace all traditional energy sources. B. To play an important role in the future energy system. C. To cause more environmental pollution. D. To be difficult to store and transport. 相关知识点: ...
Interview conducted by Mychealla RiceJul 3 2018 Hydrogenation is a chemical reaction between molecular hydrogen and other compounds and elements. Hydrogenation is used in many applications such as the food industry, petrochemical industry and the pharmaceutical manufacturing industry. In this interview, ...
Is hydrogen already being used as a fuel? Yes. There are alreadycarsthat run on hydrogen fuel cells. China has the highest number of hydrogen fuelling stations for road vehicles worldwide, where you can fill up just as you would with petrol or diesel and in the same time frame as a tr...
(H2O) into hydrogen (H2) and oxygen (O2) using electricity. This process, called water electrolysis, is a promising option for carbon-free hydrogen production since the electricity can be sourced from nuclear or renewable energy, such as wind and solar. Scientists and engineers are working to ...
2. What is paragraph 3 mainly about? A. Ways of storing hydrogen safely. B. Benefits of fuel cell electric vehicles. C. Challenges of using hydrogen as car fuel. D. Differences between gasoline and hydrogen.3. What makes it more efficient to get hydrogen from the ocean? A. The applicati...
( ) 1. What is the chemical symbol for hydrogen? A. H2 B. Hg C. He D. H 相关知识点: 试题来源: 解析 ( ) 1. D ( ) 2. C ( ) 2. Which of the following is a physical change? A. Burning of paper B. Rusting of iron C. Dissolving sugar in water D. Cooking an egg 答案...
aHydrogen[1-3] can be used in low-temperature fuel cell and the whole process has almost no pollution. What’s more, the fuel cell generates electricity and forms water. In the end, the hydrogen can be recycled and produced. Even though hydrogen is regarded fuel for internal combustion eng...
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