trisha9214 trisha9214
  • 17-04-2016
  • Chemistry
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Determine the mass of oxygen in a 7.20 g sample of Al2(SO4)3

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Аноним Аноним
  • 17-04-2016
Molar mass of Al2(SO4)3 = 342.15g/mol


[tex]7.20gAl2(SO4)3 * \frac{1mol}{342.15g} = .0210434mol[/tex]


[tex].0210434molAl2(SO4)3* \frac{12molO}{1mol} = .25252mol O[/tex]


Molar mass of O = 15.9994g/mol

[tex].25252molO* \frac{15.9994g}{1mol} = 4.04g O [/tex]
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