Question

Question 5 1 pts Which of the following contains the greatest mass of oxygen atoms? O 0.5 mol CoSO4.7H2O 2.1 mol KHSO4 1.1 mol KCr 07 2.1 mol H202 2.1 mol Na S203

Answer 1

ans is b

ga) 0.5 mol of co SoyaH2O molam mass=ware 284.10.0/mol "Total mass in 0.5 mol = Resident of Now, Massage of outon = 62.61.1 oatom = 62.61 sof 6.2.61 X 140.55 Mays o ys 100 |- 93499 B) 201 mol of RHSO4 molan mass= 136.16 gimol smolau maus im 2. 1 mol =(136-1642-1) 7 = 285-938 х 100 Masse of oxygenation 46.991, ... Massofo atom 46.99 285.93 + 134.35 g | highest e) tolmol of K₂ c2207 malau may anlol mol its mais = 1.1 x 294-185- - 323.60 - 294,185 Imol g 323.609 123.1992 A Mass y o od 0 = 38,07 / Mass= 38-07 x 323,60 e) 201 mol Nas 23 mass=2017158.11 d) 2-1 mol H2 molau may = 34.01 in 2.1 mol = 2.1X34.01 371.421 masy. od 0 = 94.07./. .: mass = 94.07871.421 =1 - 332-039 massy.ogo = 30.558% mass = 30.35 X332-03 100 67818.9 100-779 Scanned with CamScabiner

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