Biology, 30.10.2020 18:40 TyleenValdez975
Which elements do hydrogen fuel cells combine to produce electricity?
A. hydrogen and oxygen
B. hydrogen and carbon
C. hydrogen, oxygen, and nitrogen
D. hydrogen, carbon, and nitrogen
PLEASE HELP
Answers: 1
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Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.
Answers: 1
Which elements do hydrogen fuel cells combine to produce electricity?
A. hydrogen and oxygen
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