15.62 moles of HgO give 7.81 moles of oxygen when 250.0g of [tex]O_2[/tex].
A mole corresponds to the mass of a substance that contains 6.023 x [tex]10^{23}[/tex] particles of the substance.
The mole is the SI unit for the amount of a substance. Its symbol is mol.
Moles of oxygen = [tex]\frac{mass}{molar \;mass}[/tex]
Moles of oxygen = [tex]\frac{250 g}{32}[/tex]
Moles of oxygen = 7.81 moles
Chemical equation:
2HgO → 2Hg + O₂
So, the number of moles of O₂ produced = 7.81 moles
We have to find the number of moles of HgO decomposed = ?
Now we will compare the moles of HgO and O₂.
HgO : O₂
2 : 1
y : 1/2×y = 7.81
Y is the number moles of HgO.
Thus, from 15.62 moles of HgO 7.81 moles of oxygen are produced.
Learn more about the moles here:
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