trisha9214 trisha9214

17-04-2016
Chemistry

Answered

Determine the mass of oxygen in a 7.20 g sample of Al2(SO4)3

Verified Answer :

Anonymous Anonymous

17-04-2016

Molar mass of Al2(SO4)3 = 342.15g/mol

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

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

Molar mass of O = 15.9994g/mol

\(.25252molO* \frac{15.9994g}{1mol} = 4.04g O\)

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