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16-08-2021
Chemistry

contestada

Which substance is an element that is composed of molecules?

A. water (H2O)

B. methane (CH4)

C. hydrogen (H2)

D. helium (He)

Respuesta :

jacqueline6680 jacqueline6680

16-08-2021

Answer:

the answer is hydrogen which is B

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Any ideas for A B C?