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not a genius--DrBob222
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1 mol O2 occupies 22.4 L at STP. How many mols O2 do you have? You know 1 mol O2 at STP contains 6.02E23 molecules so you have 2.2E24/6.02E23 = ?mols.
Cost for one student/day = 600 + 60d Cost for one adults/day - 600 + 120d Work with these two and you do part D.
