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> College Of Agr, Eng & Science > School Of Chemistry & Physics > Westville > 2022 | CHEM110 | W|1> CHEM 110 SUMMATIVE T
Posted: Fri Jun 10, 2022 11:28 am
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- College Of Agr Eng Science School Of Chemistry Physics Westville 2022 Chem110 W 1 Chem 110 Summative T 1 (76.62 KiB) Viewed 55 times
> College Of Agr, Eng & Science > School Of Chemistry & Physics > Westville > 2022 | CHEM110 | W|1> CHEM 110 SUMMATIVE TEST 3 CHAPTERS 3 & 4: Thur 9 June 2022 - Chapters 3 & 4: Thur, 9 June 2022 A 10.00 g sample of MgSO4.7H₂O (246.48 g mol¹) was heated in an oven at 105°C until all the waters of hydration was evaporated off to generate MgSO4 (anhydrous). The samp dissolved in 250 mL of distilled water and diluted to a final volume of 0.5 L. The amount of SO4²- in parts per million (ppm) in the final solution is: Molar masses in g mol-¹: MgSO4.7H₂O = 246.48; H₂O = 18.02 7795.60 ppm O 9766.0 ppm O 15964.77 ppm O 3806.08 ppm Eli C L 8