Torr and the solubility of MgF 2 at 20 C is 8 mg per 100 g of water 12481 Torr

Torr and the solubility of mgf 2 at 20 c is 8 mg per

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17.54 Torr and the solubility of MgF2at 20Cis 8 mg per 100 g of water. 1.24.81 Torr2.15.02 Torr3.17.54 Torrcorrect4.None of these5.21.06 Torr6.19.84 Torr
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Yoon, Seong Meen – Exam 1 – Due: Sep 18 2007, 3:00 pm – Inst: James Holcombe 7 018 (part 1 of 1) 10 points Calculate the number of moles of oxygen that will dissolve in 45 L of water at 20 C if the par- tial pressure of oxygen is 0.21 atm. Henry’s constant for oxygen is 0.0013 mol L · atm . In a closed vessel containing water the pres-sure is 18 torr. If we add more water to thevessel, the pressureWhich of the following is true if the distil-late is collected from a distillation apparatuswhile the solution boils? 1.713 torr2.504 torrcorrect3.112 torr4.256 torr5.52 torrExplanation: 021 (part 1 of 1) 10 points Consider the temperature composition dia- gram of a binary mixture of A and B which forms a minimum boiling azeotrope: Initially X A = 0 . 6. 0 0 . 2 0 . 4 0 . 6 0 . 8 1 . 0 0 20 40 60 80 100 120 140 XAboiling temperature (C) 1.XAin the beakerwill remain the same.2.XAin the beakerwill approach 0.3.XAin the beakerwill approach 1.4.XAin the beakerwill approach 0.3.cor-rectExplanation:022(part 1 of 1) 10 pointsMixing 17.6 kg of ethylene glycol (commercialantifreeze, C2H6O2) with 6.00 gal of waterlowers the freezing point to-10.0 F. Supposeyou wanted to accomplish the same thing withsugar (sucrose, C12H22O11) instead of ethy-lene glycol.How many kilograms of sucrosewould you use? 1 gallon = 3.785 liters. Kfforwater = 1.86C/m.1.3.09 kg2.97.1 kgcorrect
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Yoon, Seong Meen – Exam 1 – Due: Sep 18 2007, 3:00 pm – Inst: James Holcombe 8 3. 4 . 68 × 10 - 3 kg 4. 17.6 kg 5. 6019 kg Explanation: 023 (part 1 of 1) 10 pointsSeveralinterestingobservationsfromtheworld around you are listed below.Whichof these is NOT explained by a colligativeproperty?
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  • Fall '09
  • Hackert
  • pH, Vapor pressure, Torr, Yoon, James Holcombe

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