Chemistry concepts and calculations
117302 questions • Page 358 / 2347
A 1.0-L buffer solution is 0.125 M in HNO2 and 0.155 M in NaNO2. Part A Determin
A 1.0-L buffer solution is 0.125 M in HNO2 and 0.155 M in NaNO2. Part A Determine the concentrations of HNO2 and NaNO2 after addition of 1.8 g HCl. Express your answers using thre…
A 1.0-gram sample of solid bromine is placed in a tube and the tube is sealed af
A 1.0-gram sample of solid bromine is placed in a tube and the tube is sealed after all of the air is removed. The tube and the solid bromine together weigh 18.0 grams. The tube i…
A 1.00 *10^-3 mol L-1 solution of NaCl (aq) was added slowly to 50.0 mL of a wel
A 1.00 *10^-3 mol L-1 solution of NaCl (aq) was added slowly to 50.0 mL of a well stirred 1.00*10^-3 mol L-1 solution of AgNO3 (aq). The following reaction occurred: Ag+ (aq) + Cl…
A 1.00 I, buffer solution is 0.250 M in Hf and 0.250 M in NaF. Calculate the pH
A 1.00 I, buffer solution is 0.250 M in Hf and 0.250 M in NaF. Calculate the pH of the solution after the addition of 0.150 moles of solid NaOH. Assume so volume change upon the a…
A 1.00 I, buffer solution is 0.250 M in Hf and 0.250 M in NaF. Calculate the pH
A 1.00 I, buffer solution is 0.250 M in Hf and 0.250 M in NaF. Calculate the pH of the solution after the addition of 0.150 moles of solid NaOH. Assume so volume change upon the a…
A 1.00 g sample contains only glucose (C_6H_12O_8) and (C_12H_12O_12). When the
A 1.00 g sample contains only glucose (C_6H_12O_8) and (C_12H_12O_12). When the sample is dissolved in water to a total solution volume of 25.0 mL, the osmotic pressure of the sol…
A 1.00 g sample of a hydrogen peroxide (H2O2) solution is placed in an Erlenmeye
A 1.00 g sample of a hydrogen peroxide (H2O2) solution is placed in an Erlenmeyer flask and diluted with 20 mL of 1 M aqueous sulfuric acid. To this solution is added 0.0200 M KMn…
A 1.00 g sample of coffee beans was completely combusted in a bomb calorimeter (
A 1.00 g sample of coffee beans was completely combusted in a bomb calorimeter (Ccal = 62.1 J/o C) and caused the temperature of the water in the calorimeter to increase from 24.6…
A 1.00 liter solution contains 0.23 M hypochlorous acid and 0.30 M potassium hyp
A 1.00 liter solution contains 0.23 M hypochlorous acid and 0.30 M potassium hypochlorite. If 0.150 moles of potassium hydroxide are added to this system, indicate whether the fol…
A 1.00 liter solution contains 0.24 M ammonia and 0.31 M ammonium bromide . If 0
A 1.00 liter solution contains 0.24 M ammonia and 0.31 M ammonium bromide. If 0.078 moles of barium hydroxide are added to this system, indicate whether the following statements a…
A 1.00 liter solution contains 0.35 M ammonia and 0.45 M ammonium iodide. If 0.1
A 1.00 liter solution contains 0.35 M ammonia and 0.45 M ammonium iodide. If 0.110 moles of barium hydroxide are added to this system, indicate whether the following statements ar…
A 1.00 liter solution contains 0.36 M ammonia and 0.28 M ammonium iodide. If 0.1
A 1.00 liter solution contains 0.36 M ammonia and 0.28 M ammonium iodide. If 0.14 moles of nitric acid are added to this system, indicate whether the following statements are true…
A 1.00 liter solution contains 0.39 M ammonia and 0.30 M ammonium nitrate . If 0
A 1.00 liter solution contains 0.39 M ammonia and 0.30 M ammonium nitrate. If 0.15 moles of nitric acid are added to this system, indicate whether the following statements are TRU…
A 1.00 liter solution contains 0.39 M nitrous acid and 0.51 M sodium nitrite . I
A 1.00 liter solution contains 0.39 M nitrous acid and 0.51 M sodium nitrite. If 0.130 moles of barium hydroxide are added to this system, indicate whether the following statement…
A 1.00 liter solution contains 0.40 M ammonia and 0.52 M ammonium iodide . If 0.
A 1.00 liter solution contains 0.40 M ammonia and 0.52 M ammonium iodide. If 0.260 moles of potassium hydroxide are added to this system, indicate whether the following statements…
A 1.00 liter solution contains 0.40 moles acetic acid and 0.31 moles sodium acet
A 1.00 liter solution contains 0.40 moles acetic acid and 0.31 moles sodium acetate . If 0.15 moles of hydroiodic acid are added to this system, indicate whether the following sta…
A 1.00 liter solution contains 0.40 moles hydrofluoric acid and 0.31 moles sodiu
A 1.00 liter solution contains 0.40 moles hydrofluoric acid and 0.31 moles sodium fluoride. If 0.15 moles of perchloric acid are added to this system, indicate whether the followi…
A 1.00 liter solution contains 0.41 M ammonia and 0.32 M ammonium nitrate If Q.1
A 1.00 liter solution contains 0.41 M ammonia and 0.32 M ammonium nitrate If Q.16 moles of hydrobromic acid are added to this system indicate whether the following statements are …
A 1.00 liter solution contains 0.42 M acetic acid and 0.54 M potassium acetate .
A 1.00 liter solution contains 0.42 M acetic acid and 0.54 M potassium acetate. If 0.140 moles of barium hydroxide are added to this system, indicate whether the following stateme…
A 1.00 liter solution contains 0.42 M ammonia and 0.32 M ammonium perchlorate .
A 1.00 liter solution contains 0.42 M ammonia and 0.32 M ammonium perchlorate. If 0.16 moles of hydroiodic acid are added to this system, indicate whether the following statements…
A 1.00 liter solution contains 0.42 moles nitrous acid and 0.32 moles sodium nit
A 1.00 liter solution contains 0.42 moles nitrous acid and 0.32 moles sodium nitrite . If 0.16 moles of nitric acid are added to this system, indicate whether the following statem…
A 1.00 liter solution contains 0.44 M hydrocyanic acid and 0.33 M potassium cyan
A 1.00 liter solution contains 0.44 M hydrocyanic acid and 0.33 M potassium cyanide. If 25.0 mL of water are added to this system, indicate whether the following statements are tr…
A 1.00 liter solution contains 0.46 M hydrocyanic acid and 0.35 M potassium cyan
A 1.00 liter solution contains 0.46 M hydrocyanic acid and 0.35 M potassium cyanide. If 25.0 mL of water are added to this system, indicate whether the following statements are tr…
A 1.00 liter solution contains 0.48 moles nitrous acid and 0.37 moles sodium nit
A 1.00 liter solution contains 0.48 moles nitrous acid and 0.37 moles sodium nitrite . If 0.18 moles of hydroiodic acid are added to this system, indicate whether the following st…
A 1.00 liter solution contains 0.49 moles hypochlorous acid and 0.38 moles potas
A 1.00 liter solution contains 0.49 moles hypochlorous acid and 0.38 moles potassium hypochlorite . If 0.19 moles of hydrochloric acid are added to this system, indicate whether t…
A 1.00 liter solution contains 0.50 M acetic acid and 0.38 M potassium acetate I
A 1.00 liter solution contains 0.50 M acetic acid and 0.38 M potassium acetate If 25.0 mL of water are added to this system, indicate whether the following statements are true or …
A 1.00 liter solution contains 0.50 M hydrofluoric acid and 0.38 M sodium fluori
A 1.00 liter solution contains 0.50 M hydrofluoric acid and 0.38 M sodium fluoride. If 25.0 mL of water are added to this system, indicate whether the following statements are tru…
A 1.00 liter solution contains 0.50 moles hydrofluoric acid and 0.38 moles sodiu
A 1.00 liter solution contains 0.50 moles hydrofluoric acid and 0.38 moles sodium fluoride . If 0.19 moles of nitric acid are added to this system, indicate whether the following …
A 1.00 liter solution contains 0.55 moles nitrous acid and 0.42 moles potassium
A 1.00 liter solution contains 0.55 moles nitrous acid and 0.42 moles potassium nitrite. If 0.21 moles of perchloric acid are added to this system, indicate whether the following …
A 1.00 liter solution contains 0.57 M hydrofluoric acid and 0.43 M sodium fluori
A 1.00 liter solution contains 0.57 M hydrofluoric acid and 0.43 M sodium fluoride. If 25.0 mL of water are added to this system, indicate whether the following statements are TRU…
A 1.00 liter solution contains 0.58 M ammonia and 0.45 M ammonium chloride . If
A 1.00 liter solution contains 0.58 M ammonia and 0.45 M ammonium chloride. If 0.22 moles of perchloric acid are added to this system, indicate whether the following statements ar…
A 1.00 liter solution contains 0.60 M hydrocyanic acid and 0.45 M sodium cyanide
A 1.00 liter solution contains 0.60 M hydrocyanic acid and 0.45 M sodium cyanide. If 40.0 mL of water are added to this system, indicate whether the following statements are true …
A 1.00 mL pipet sample of dilute acetic acid required 23.4 mL of 0.10 M NaOH to
A 1.00 mL pipet sample of dilute acetic acid required 23.4 mL of 0.10 M NaOH to titrate the sample to a phenolphthalein endpoint. Calculate the concentration of acetic acid in th…
A 1.00 mol sample of CH3OH (l) was added to an infinitely large sample of CH3OH-
A 1.00 mol sample of CH3OH (l) was added to an infinitely large sample of CH3OH-H20 solution with XCH3OH=0.0900. For this solution, VH2O = 18.1 ml/mol and VCH3OH = 52.2 ml/mol. 1)…
A 1.00 mol sample of CH3OH (l) was added to an infinitely large sample of CH3OH-
A 1.00 mol sample of CH3OH (l) was added to an infinitely large sample of CH3OH-H20 solution with XCH3OH=0.0900. For this solution, VH2O = 18.1 ml/mol and VCH3OH = 52.2 ml/mol. 1)…
A 1.00 mol sample of O_2 gas is confined in a 23.7 liter container at 16.3 degre
A 1.00 mol sample of O_2 gas is confined in a 23.7 liter container at 16.3 degree C If the amount of gas is increased to 1.50 mol. holding the volume and temperature constant, the…
A 1.00 mole sample of hydrogen gas has a temeprature of 27.0 degree celsius. The
A 1.00 mole sample of hydrogen gas has a temeprature of 27.0 degree celsius. The atomic mass of hydrogen is 1.00u. a. What is the mass of 1.00 mole of H2 gas? ZGive your answer in…
A 1.00 mu L sample of an equal volume mixture of 2-pentanone and 1-nitropropane
A 1.00 mu L sample of an equal volume mixture of 2-pentanone and 1-nitropropane is injected into a gas chromatograph. The densities of these compounds are 0.8124 g/mL for 2-pentan…
A 1.00-L vessel originally contained 0.225 mol A, 0.435 mol B, and 0.156 mol C.
A 1.00-L vessel originally contained 0.225 mol A, 0.435 mol B, and 0.156 mol C. The general balanced reaction is: A(g) + B(g) ? 2C(g) The equilibrium constant KC for this reaction…
A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produc
A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of solution and is titrated with 0.500 M HCl. pKB1 = 4.22 pKb2= 8.67 A.) What is the ini…
A 1.00-g sample of the ethane, C2H6(g) is burned (in an atmosphere of excess oxy
A 1.00-g sample of the ethane, C2H6(g) is burned (in an atmosphere of excess oxygen) in a bomb calorimeter (?V = 0) containing 1200. g of water; this being a large enough number o…
A 1.00-g sample of the ethane, C2H6(g) is burned (in an atmosphere of excess oxy
A 1.00-g sample of the ethane, C2H6(g) is burned (in an atmosphere of excess oxygen) in a bomb calorimeter (?V = 0) containing 1200. g of water; this being a large enough number o…
A 1.00-mL aliquot of a solution containing Cu^2+ and Ni^2* is treated with 25.00
A 1.00-mL aliquot of a solution containing Cu^2+ and Ni^2* is treated with 25.00 mL of a 0.04415 M EDTA solution. The solution is then back titrated with 0.02366 M Zn^2+ solution …
A 1.000 L river water sample contains [Ca2+] = 5.6 x 10-3 M, and no other hardne
A 1.000 L river water sample contains [Ca2+] = 5.6 x 10-3 M, and no other hardness ions. (a) What is the hardness (in ppm CaCO3) of this sample? (b) Assuming the sample is saturat…
A 1.000 mol sample of propane, a gas used for cooking in many rural areas, was p
A 1.000 mol sample of propane, a gas used for cooking in many rural areas, was placed in a bomb calorimeter with excess oxygen and ignited. The initial temperature of the calorime…
A 1.000-g steel sample was analyzed for its Cr and Mn content by dissolving the
A 1.000-g steel sample was analyzed for its Cr and Mn content by dissolving the sample in concentrated nitric acid, adding concentrated sulfuric and phosphoric acids, and oxidizin…
A 1.000-mL aliquot of a solution containing Cu and Ni2 is treated with 25.00 mL
A 1.000-mL aliquot of a solution containing Cu and Ni2 is treated with 25.00 mL of a 0.03679 M EDTA solution. The solution is then back titrated with 0.02166 M Zn2 solution at a p…
A 1.000-mL aliquot of a solution containing Cu and Ni2* is treated with 25.00 mL
A 1.000-mL aliquot of a solution containing Cu and Ni2* is treated with 25.00 mL of a 0.05541 M EDTA solution. The solution is then back titrated with 0.02070 M Zn2 solution at a …
A 1.000-mL aliquot of a solution containing Cu and Ni2* is treated with 25.00 mL
A 1.000-mL aliquot of a solution containing Cu and Ni2* is treated with 25.00 mL of a 0.05541 M EDTA solution. The solution is then back titrated with 0.02070 M Zn2 solution at a …
A 1.000-mL aliquot of a solution containing Cu2 and Ni2 is treated with 25.00 mL
A 1.000-mL aliquot of a solution containing Cu2 and Ni2 is treated with 25.00 mL of a 0.03480 M EDTA solution. The solution is then back titrated with 0.02022 M Zn2 solution at a …
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