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 element is represented by the symbol 'Fe'?
View QuestionWhich compound is commonly known as ammonium nitrate?
View QuestionWhat is the chemical name for Fe2O3?
View QuestionWhat is the chemical formula for potassium nitrate?
View QuestionWhat is the pH value of pure water?
View QuestionWhat is the chemical formula for sodium oxide?
View QuestionWhich gas is most abundant in Earth's atmosphere?
View QuestionWhich element is known as quicksilver?
View QuestionWhich acid is present in lemon juice?
View QuestionWhat is the chemical name for CH4?
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