Hydrogen–oxygen Fuel Cells
Gbogbo ọrọ náà
Imagine a power source that runs on hydrogen and oxygen and whose only waste product is pure water. That is a hydrogen-oxygen fuel cell, a device that turns the energy of a chemical reaction straight into electricity without burning anything. Car makers and spacecraft engineers alike have looked to it as a clean alternative to the petrol engine.
In this lesson you will learn what a fuel cell does, why water is its only chemical product, and how it compares with a petrol engine. You will weigh the genuine advantages, such as cleaner emissions and high efficiency, against the real hurdles of making, storing and moving hydrogen safely.
Ebumnobi
- State that a hydrogen-oxygen fuel cell uses hydrogen and oxygen to produce electricity with water as the only chemical product.
- [Supplement] Describe the advantages and disadvantages of using hydrogen-oxygen fuel cells in comparison with gasoline / petrol engines in vehicles.
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Hydrogen–oxygen Fuel Cells. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- What is the only chemical product of a hydrogen-oxygen fuel cell? A. Carbon dioxide B. Hydrogen peroxide C. Water D. Oxygen Answer: C
- Which equation represents the overall reaction in a hydrogen-oxygen fuel cell? A. 2H2 + O2 -> 2H2O B. H2 + O2 -> H2O2 C. C + O2 -> CO2 D. 2H2O -> 2H2 + O2 Answer: A
- Which is an advantage of a hydrogen fuel cell over a petrol engine in a vehicle? A. Hydrogen is easier to store than petrol B. It produces no carbon dioxide at the point of use C. It needs no fuel supply D. It works like an ordinary battery Answer: B
- Which is a disadvantage of using hydrogen fuel cells in cars? A. They emit carbon dioxide B. Hydrogen is difficult to store and transport safely C. They have many moving parts D. They produce soot Answer: B
- Which statement about a fuel cell is correct? A. It stores a fixed amount of energy like a battery B. It produces electricity while hydrogen and oxygen are supplied C. Its main product is carbon dioxide D. It burns hydrogen to make heat only Answer: B
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Hydrogen–oxygen Fuel Cells? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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