Explain the features of the fuel cell built by Ludwig Mond and Charles Langer during the last decades of the 19th century.
What will be an ideal response?
In the last decades of the 19th century, as large-scale generation was ramping up, Ludwig Mond and Charles Langer built a fuel cell that used air and industrial coal gas instead of hydrogen and oxygen. It used thin, perforated platinum to increase the contact area of the electrodes with the other ingredients and could generate six amps per square foot of working electrode at 0.73 volts.
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A. 4 B. 8 C. 10 D. 12
In 2012, the United States consumed nearly ____ percent of the world’s total oil use
a. 11 c. 22 b. 16 d. 34
The removal of all remaining combustion gasses from a boiler after firing is accomplished by ___________
A. pre-purge B. post purge C. blow down D. water washing
Sheep and goats routinely have multiple offspring per pregnancy.
Answer the following statement true (T) or false (F)