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What can introduce small amounts of free water in empty or partially filled fuel cells/tanks?

User Rfadams
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Final answer:

Small amounts of free water can be introduced in empty or partially filled fuel cells/tanks through differences in thermal expansion, by-product of fuel cell reactions, or through the process of electrolysis.

Step-by-step explanation:

Small amounts of free water can be introduced in empty or partially filled fuel cells/tanks through various means.

  1. Differences in thermal expansion of materials can cause gasoline to overflow from a freshly filled tank on a hot day.
  2. Fuel cells that generate electricity from hydrogen and oxygen can produce water as a by-product.
  3. Electrolysis, a process that drives the decomposition of water using an external voltage, can also introduce small amounts of free water.

User Neon
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