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please show work. i need to know how to do this for a test Question 18...
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Question 20 1 pts The solubility of manganese (II) hydroxide is 2.2 e-5 M. What is the Ksp of Mn(OH)2? 0 2.1e-14 4.3 e-14 O 2.2 e-5 O 4.8 e -10 O 1.1 e -14 Question 21 1 pts
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The reaction AB is first order in (A). Consider the following data. Time (s) 0.0 5.0 10.0 15.0 20.0 [A] (M) 0.20 0.14 0.10 0.071 0.050 The concentration of A is Mafter 40.0 s. 1.3 e-2 O 0.17 O 3.5 e-4 0 0.025 1.2
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3 pts Question 2 Acetaminophen is a medication used to treat pain and fever and contains Carbon, Hydrogen, Oxygen, and Nitrogen. Combustion analysis of a 15.0-mg sample of acetaminophen produced 8.10 mg of water. What is the percent by mass of Hydrogen in acetaminophen? 4.4% 12.0% 7.5% 3.0% 6.0% Question 4 1.5 pts AgCl, FeCO3. Hg Bry, and Pbly are compounds that are insoluble in water. Which compound would be more soluble in acidic solution? AgCl only...
Explain and show all your work for full credit. This group assignment is over Ksp, Common Ion effect, solubility. Silver dichromate, Ag2Cr2O7 yields a saturated solution (Q=Ksp) with 8.3 x 10-3 g/100mL silver dichromate in water. What is the Ksp of silver dichromate? Ksp = 3.8 E -3 Ksp = 2.8 E -11 Ksp = 3.08 E -18 What is the solubility (in M) in a 1.5 E-2M solution of sodium dichromate? 0.061 M 5.67 E-4 M 2.16 E-5 M...
Question 3 7.5 pts Time Running Attempt due: Jur 1 Hour, 14 Mi The concentration of Agt in a solution saturated with Ag2C2O4(s) is 1.50x10^-4 M. Calculate Ksp for AgzC204. Ksp = es
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A flask is charged with 0.124 mol of A and allowed to react to form B according to the reaction A(g) →B(g). The following data are obtained for [A] as the reaction proceeds: Time (s) 0.00 10.0- 20.0 30.0 40.0 Moles of A 0.124 0.110 0.088 0.073 0.054 The average rate of disappearance of A between 10 s and 20 s is mol/s. ect Answer 2.2...
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Question 21 1 pts The reaction AB is first order in A. Consider the following data: Time (s) [A] (M) 0.0 2.3 10.0 0.58 20.0 0.14 The rate constant for this reaction is s-1 0.013 O 0.030 O 3.1e-3 O 0.14 O 3.0
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Incorrect Question 7 0/1 pts The concentration of iodide ions in a saturated solution of lead (11) iodide is_ The solubility product constant of Pblz is 1.4x10-8. 3.5x10-9 3.0x10-3 1.5x103 1.4x10-8 3.8x10-4 Incorrect Question 9 0/1 pts The molar solubility of lead () chloride (PbCl2) is 1.6x102 M. What is the Ksp of PbCl2? 4.1x10-6 5.0x10-4 1.6x10-2 3.1x107 1.6x10-5
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A compound decomposes by a first-order process. If 60% of the compound remains after 60 minutes, the half-life of the compound is minutes. -5 O 44 0 -18 45 81
Question 22 (4 points) Saved The Ksp of Pbs is 2.5x10-18. What concentration of S2- is necessary to precipitate Pbs from a solution which is 0.030 M in Pb2+? O 8.3x10-17 7.5x10-17 O 8.3x10-19 O 7.5x10-19