A. Which of the following system variables has to be set to 1 if the Double hatch box is selected?..

Aluminum metal can react with water, but the oxide coating
normally found on the metal prevents that reaction. In 2007, a Purdue
University researcher found that adding gallium to aluminum prevented the
formation of the oxide coating, allowing the aluminum to react with water to
form hydrogen gas. This process might lead to a compact source of hydrogen gas
for fuel. Write a balanced equation for the reaction of aluminum with water
(aluminum hydroxide is the other product), and identify the oxidizing and
reducing agents in the reaction.

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