Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 5.00 moles of aluminum sulfate, al2(so4)3.express the number of moles of al, s, and o atoms numerically, separated by commas. view available hint(s)

moles Al = 5 moles * 2 = 10 moles Al

moles S = 5 moles * 3 = 15 moles S

moles O = 5 moles * 12 = 60 moles O

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1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%