Relax

Respuesta :

Explanation:

H2O:

2 H2O shows 2 atoms of hydrogen. The number 2 in front of it means 2 moles of H2O

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CHA:

It only shows 1 atom of hydrogen

1 CHA means 1 mole of CHA

2 CHA means 2 moles of CHA

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HO2:

It only shows 1 atom of hydrogen

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H2SO4:

It shows 2 atoms of hydrogen

Answer:

H2O

H2SO4