What effect does a catalyst have on energy?

What will be an ideal response?


A catalyst lowers the energy needed for a reaction to occur (if energy is needed, that is) but is not used up in the reaction. A catalyzed reaction is one that would not occur spontaneously without a catalyst but that will occur with the assistance of a catalyst. When the reaction is over, the amount of catalyst present remains the same.

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Technician A says spark plugs that have tapered seats require no gasket. Technician B says spark plugs that have flat seats require gaskets. Who is correct?

A. Technician A B. Technician B C. Both technicians D. Neither technician

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What component of a bid provides for unpredictable things that can disrupt a construction schedule and increase costs?

a. overhead costs c. liability insurance b. specifications d. contingency allowance

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A problem that can look like refrigerant overcharge if a service technician is only looking at system pressures is:

A) Low evaporator airflow. B) Low condenser airflow. C) An overfeeding refrigerant metering device. D) High evaporator airflow.

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When a voltage is present at the terminal of an input module, a ____________________ (0, 1) is stored in the corresponding bit of the memory image table.

Fill in the blank(s) with the appropriate word(s).

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