mimi145 mimi145

23-10-2016
Chemistry

contestada

Why isn't air travel based on hydrogen popular today? A.Hydrogen is very expensive B. Hydrogen is difficult to find C. Hydrogen is flammable and dangerous D. Hydrogen is too cold for travelers to stand on long trips

Respuesta :

23-10-2016

the answer is c. hydrogen is flammable and dangerous

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Аноним Аноним

23-10-2016

C.hydrogen is difficult to find

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