Find the mass of O in Al2(SO4)3:
Mole Ratio: 1 mol Al2(SO4)3: 12 moles O
Mass of Sample: 7.2 g
Obtain the following data from books and the internet
Molar mass of Al2(SO4)3: 342.15 g/mol
Molar Mass O: 16.00 g/mol
Determine the mass of oxygen in a 7.2-g sample of Al2(SO4)3. Express the mass in grams to two significant figures.
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