Subject: Chemistry
Book: General Chemistry
Fuel cells generate electricity by combining hydrogen (or other fuels) and oxygen electrochemically, producing water and heat. Proton exchange membrane (PEM) fuel cells are prominent in transportation, offering high efficiency and zero emissions if hydrogen is from renewable sources. Challenges include catalyst costs (often platinum) and hydrogen storage. Fuel cells are a key technology in the transition to cleaner energy systems.
Which gas is most abundant in Earth's atmosphere?
View QuestionWhat is the chemical formula for potassium chlorate?
View QuestionWhich element is represented by the symbol 'Na'?
View QuestionWhat is the chemical name for CH4?
View QuestionWhat is the chemical formula for calcium carbonate?
View QuestionWhich element is represented by the symbol 'K'?
View QuestionWhich element is represented by the symbol 'B'?
View QuestionWhich element is represented by the symbol 'Si'?
View QuestionWhich element is used in thermometers?
View QuestionWhich element is represented by the symbol 'S'?
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