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Proton Exchange Membrane (PEM) fuel cells are being discussed. Technician A says the cells combine hydrogen (H2) with oxygen (O₂) to create electrical current flow. Technician B says a by product of the fuel cell operation is water. Who is correct?
Electronic Commerce
The buying and selling of goods and services through the internet or other electronic systems.
Www.Amazon.Com
An online marketplace known for facilitating the buying and selling of a wide variety of goods and services.
Marketplace
A physical or virtual venue where goods and services are exchanged, including everything from retail stores to online platforms.
Monopolistic Competition
A market structure characterized by many firms offering products that are similar but not perfect substitutes, allowing for some degree of market power.
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