Which of these is a disadvantage of hydrogen fuel cells?
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A. The only emission produced by hydrogen fuel cells is water.
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B. Hydrogen fuel is expensive to produce and transport.
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C. Hydrogen fuel can be derived from renewable energy sources.
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D. Hydrogen fuel is continually available and useful for heating.
SUBMIT

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Is a pencil falling to the floor anon contact force, a force, or a contact force

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg