Chemistry, 10.10.2019 17:40 eddy3625

What is the percent composition by mass of aluminum in al2(so4)3 (gram-formula mass = 342 grams/mole)?
(1) 7.89% (3) 20.8%
(2) 15.8% (4) 36.0%

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What is the percent composition by mass of aluminum in al2(so4)3 (gram-formula mass = 342 grams/mole...