Answer the following statement(s) true (T) or false (F)
1. A reducing agent is the element in a reaction that loses electrons.
2. A fuel cell is an electrochemical power source that converts the chemical energy of two
reactants directly into mechanical energy.
3. The oxygen electrode is the cathode and is considered positive with respect to the hydrogen electrode, called the anode.
4. Fuel cells are an energy resource.
5. Solid oxide fuel cells (SOFCs) operate in the temperature range of 800°C - 1000°C.
1. TRUE
2. FALSE
3. TRUE
4. FALSE
5. TRUE
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Before commencing the construction of a building, the owner must apply to the city to obtain a ______.
A) construction permit. B) commence work order. C) building permit. D) building license.
¿A qué temperatura suele funcionar un sistema típico de agua fría?
a. 10 °F (-12,2 °C) b. 24 °F (-4,44 °C) c. 36 °F (2,22 °C) d. 46 °F (7,77 °C)
Henry applied 212 pounds per acre of fertilizer to 342 acres. How many tons of fertilizer were applied?
What will be an ideal response?
For each graph in Figure E-58 select the corresponding signal or signals from the group, 
. (The corresponding signal may not be one of the choices A through E.)
What will be an ideal response?