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24-02-2022
Chemistry

contestada

A lab technician obtains an unknown liquid sample
and through experimentation, discovers that
when the compound breaks down, there are
2.688 g hydrogen and 21.32 g oxygen.

What is the percent composition of each element
in the sample?

Calculate the number of moles of each element in
the sample.

Respuesta :

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24-02-2022

21.32+2.688= 24.008

(2.688/24.008) x100= 11.2% of hydrogen
(21.32/23.008) x100= 88.8% of oxygen

Hydrogen mols: 2.688/1= 2.688

Oxygen mols: 21.32/16= 1.3325

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