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Praxis II General Science

Category - Major Ideas

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If the heat of reaction for a given chemical reactions is positive, then what does this mean?

The reaction requires energy to take place.
The reaction produces energy.
The reaction has positive activation energy.
The reaction has negative activation energy.
The reaction is not possible.

Explanation

Answer: A - If the heat of reaction is positive, then that means energy must be put into the system for a reaction to take place. If the heat of reaction is negative, then the reaction will release energy.

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Praxis II General Science

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Praxis II General Science

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