Chemistry concepts and calculations
117302 questions • Page 111 / 2347
1. Calculate the moalr solubility of AgBr in a 2.7 M NH3 solution = ____________
1. Calculate the moalr solubility of AgBr in a 2.7 M NH3 solution = ______________________M Select all that apply 2. The molar solubility of AgCl in 6.5 x10^-3 M AgNO3 is 2.5x10^-…
1. Calculate the molality of a solution that contains 56.5 g of benzoic acid, CH
1. Calculate the molality of a solution that contains 56.5 g of benzoic acid, CHsCOOH, in 325 mL of ethanol, C-HsOH. The density of ethanol is 0.789 g/mL. 2. What are the mole fra…
1. Calculate the molar mass of Ca3(PO4)2. 2. How many molecules are contained in
1. Calculate the molar mass of Ca3(PO4)2. 2. How many molecules are contained in the 254 grams of CH4? The molar mass of CH4 is 16 grams/mole. 3. What is the mass of 6.89*1022 mol…
1. Calculate the molar mass of H 2 CO 3 . Select one: a. 74.04 g/mol b. 61.02 g/
1. Calculate the molar mass of H2CO3. Select one: a. 74.04 g/mol b. 61.02 g/mol c. 60.01 g/mol d. 62.03 g/mol e. 29.02 g/mol 2. How many moles of N2O4 are in 76.3 g N2O4? The mola…
1. Calculate the molar mass of a vapor that has a density of 1.58 g/L at 23.2 oC
1. Calculate the molar mass of a vapor that has a density of 1.58 g/L at 23.2 oC and 610. torr. 2. If the volume of a container is 39.4 L. and the container holds a gas at 13.2 oC…
1. Calculate the molar mass of a vapor that has a density of 1.58 g/L at 23.2 oC
1. Calculate the molar mass of a vapor that has a density of 1.58 g/L at 23.2 oC and 610. torr. 2. If the volume of a container is 39.4 L. and the container holds a gas at 13.2 oC…
1. Calculate the molar masses of benzaldehyde, potassium permanganate, and benzo
1. Calculate the molar masses of benzaldehyde, potassium permanganate, and benzoic acid. See page 2 for the formulas. How many moles of benzaldehyde are equal to 0.988g of that su…
1. Calculate the molar masses of salicylic acid, acetic anhydride and ASA. 2. Ca
1. Calculate the molar masses of salicylic acid, acetic anhydride and ASA. 2. Calculate the number of moles of salicylic acid and acetic anhydride used in the experiment. 3. Ident…
1. Calculate the molar masses of the reactants KHP and NaOH in the following neu
1. Calculate the molar masses of the reactants KHP and NaOH in the following neutralization reaction: NaOH (aq) + KHC8H4O4(aq) ? NaKC8H4O4(aq) + H2O(l) 2. The prep lab has provide…
1. Calculate the molarity of a solution made by dissolving 0.4000 g of acetylsal
1. Calculate the molarity of a solution made by dissolving 0.4000 g of acetylsalicylic acid (180.15 g/mol) in 250.00 mL of water. 2. Calculate the volume of the solution prepared …
1. Calculate the molarity of an aqueous solution that is 5.64% sodium hypochlori
1. Calculate the molarity of an aqueous solution that is 5.64% sodium hypochlorite by mass. Assume that the density of the solution is identical to that of pure water (1.00 g/mL).…
1. Calculate the molarity of an aqueous solution that is 5.64% sodium hypochlori
1. Calculate the molarity of an aqueous solution that is 5.64% sodium hypochlorite by mass. Assume that the density of the solution is identical to that of pure water (1.00 g/mL).…
1. Calculate the molarity of the metal ion in each solutiondescribed below. A) 5
1. Calculate the molarity of the metal ion in each solutiondescribed below. A) 5.00mL of 0.400M CuSO4 is added to 15.0mLH2O B) 10.00mL of 0.200 M AgNO3 is added to 10.0mLH2O 2. Wh…
1. Calculate the mole ratio of aluminum : hydrogen using your data. How does thi
1. Calculate the mole ratio of aluminum : hydrogen using your data. How does this ratio compare with the mole ratio in your balanced equation above? Comment on any experimental er…
1. Calculate the molecular weight of a gas if 600 ml of the gas measured at 30 o
1. Calculate the molecular weight of a gas if 600 ml of the gas measured at 30 oC and 630 torr has a mass of 0.60 g. a. 30 b. 40 …
1. Calculate the moles of ASA actually obtained from the grams of product in you
1. Calculate the moles of ASA actually obtained from the grams of product in your reaction. 2. Calculate the % yield. 3. Calculate the % error in your melting point, compared to t…
1. Calculate the new molarity that results when 500 mL of a 0.5 M Ca(NO 3 ) 2 so
1. Calculate the new molarity that results when 500 mL of a 0.5 M Ca(NO3)2 solution is diluted with water to a final total volume of 1.7 L. SHOW WORK 2. A 30.0 mL of a 0…
1. Calculate the number of sodium ions in (6.107x10^1) g sodium phosphate. 2. An
1. Calculate the number of sodium ions in (6.107x10^1) g sodium phosphate. 2. An aqueous solution of 10.0 grams of ammonium sulfide is mixed with an aqueous soluion of 10.0 grams …
1. Calculate the number of sodium ions in (6.107x10^1) g sodium phosphate. 2. An
1. Calculate the number of sodium ions in (6.107x10^1) g sodium phosphate. …
1. Calculate the pH a) Calculate the pH of a solution that contains 0.28 M oxali
1. Calculate the pH a) Calculate the pH of a solution that contains 0.28 M oxalic acid. Calculate the concentration of the oxalate ion in this solution. b) Calculate the pH of a 0…
1. Calculate the pH at the equivalence point in titrating 0.100 M solutions of e
1. Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 8.0×102MNaOH. a). chlorous acid (HClO2) b). benzoic acid (C6H5COOH) 2. Ho…
1. Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous aci
1. Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)? The Ka for HOCl is 3.…
1. Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous aci
1. Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)? The Ka for HOCl is 3.…
1. Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous aci
1. Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)? The Ka for HOCl is 3.…
1. Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous aci
1. Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)? The Ka for HOCl is 3.…
1. Calculate the pH of 0.072M HNO2 2. Calculate the pH of a solution made with 0
1. Calculate the pH of 0.072M HNO2 2. Calculate the pH of a solution made with 0.072M HNO2 and 0.065M NaNO2 3. What effect to the pH did adding a salt have on the HNO2 solution? 4…
1. Calculate the pH of 0.200 M barium acetate solution. 2. Is the following reac
1. Calculate the pH of 0.200 M barium acetate solution. 2. Is the following reaction product-favored or reactant-favored? F^- (aq) + H2O (l) >><< HF (aq) + OH^- (aq) …
1. Calculate the pH of a 0.01 M Solution of salicylic acid which has a K a =1.06
1. Calculate the pH of a 0.01 M Solution of salicylic acid which has a Ka=1.06×10-3. 2. Calculate the pH of a 1g/100mL solution of ephedrine sulfate. The molecular weight of the s…
1. Calculate the pH of a 0.01 M Solution of salicylic acid which has a K a =1.06
1. Calculate the pH of a 0.01 M Solution of salicylic acid which has a Ka=1.06×10-3. 2. Calculate the pH of a 1g/100mL solution of ephedrine sulfate. The molecular weight of the s…
1. Calculate the pH of a buffer solution made by adding 5.0g of anhydrous sodium
1. Calculate the pH of a buffer solution made by adding 5.0g of anhydrous sodium acetate (NaC2H3O2) to 50mL of 0.100 M acedtic acid. Assume there is no change in volume on adding …
1. Calculate the pH of a solution made by mixing 50.0 mL of 0.10 M benzoic acid
1. Calculate the pH of a solution made by mixing 50.0 mL of 0.10 M benzoic acid and 100. mL of 0.15 M potassium benzoate.Calculate the pH of a solution made by mixing 50.0 mL of 0…
1. Calculate the pH of each of the following strong acid solutions: a) 0.0167 M
1. Calculate the pH of each of the following strong acid solutions: a) 0.0167 M HNO3, b) 0.225 M HClO3 in 2.00 L of solution, c) 15.00 mL of 1.00 M HCl diluted to 0.500 L, d) a mi…
1. Calculate the pH of the cathode compartment solution if the cell emf at 298 K
1. Calculate the pH of the cathode compartment solution if the cell emf at 298 K is measured to be 0.620 V when [Zn2+]= 0.23 M and PH2= 0.94 atm . 2. One of the differences betwee…
1. Calculate the pH of the solution obtained by adding 0.10 moles of NaOH to a 1
1. Calculate the pH of the solution obtained by adding 0.10 moles of NaOH to a 1 liter solution of 0.5 M H2SO3. The Ka for H2SO3= 1.71X10^-2. (YOU MAY USE THE HENDERSON HASSELBACK…
1. Calculate the percent fluoride by weight in H2SiF6. 2. Minnesota Statutes req
1. Calculate the percent fluoride by weight in H2SiF6. 2. Minnesota Statutes require all municipal water supplies to maintain a fluoride concentration of 0.9 ppm to 1.5 ppm (measu…
1. Calculate the pressure (in atm) of a sample of gas collected over water at 40
1. Calculate the pressure (in atm) of a sample of gas collected over water at 40oC if the atmospheric pressure is 758.2 mm Hg. Remember, 1 atm = 760 mm Hg and Table 11.3 in the te…
1. Calculate the pressure in pascals exerted on a tabletop by a cube of iron tha
1. Calculate the pressure in pascals exerted on a tabletop by a cube of iron that is 3.60 centimeters on each side and has a mass of 367 grams. Answer is needed in Pa. 2. Calcula…
1. Calculate the pressure of 0.5634 moles of N2 occupying a volume of 6.5 liters
1. Calculate the pressure of 0.5634 moles of N2 occupying a volume of 6.5 liters at 465.6°C, assuming the van der Waals' a is 1.39 atm-liters-mole2 and b is 0.0318 liters- mole. G…
1. Calculate the pressure of argon gas at 22 C ito 1.39 g of this gas is placed
1. Calculate the pressure of argon gas at 22 C ito 1.39 g of this gas is placed in a 825 ml. container. What is the molecular weight of a gas if 0.223 g of it occupies 149 ml. und…
1. Calculate the rate constant, k, and write the rate law expression for the cat
1. Calculate the rate constant, k, and write the rate law expression for the catalyzed decomposition of hydrogen peroxide. Explain how you determined the order of the reaction in …
1. Calculate the retention factors for the four single component spots shown in
1. Calculate the retention factors for the four single component spots shown in Figure List the measured values of d(s) and the value of d(m) for the four developed spots. Show th…
1. Calculate the solubility of MgF2, in water at 25C units of a) Moles per liter
1. Calculate the solubility of MgF2, in water at 25C units of a) Moles per liter and b) Grams per liter. Ksp is 7.4 x 10^-11. RECALCULATE when mixed with 0.1 M NaF 2.A particular …
1. Calculate the standard free energy change at 500 K for the following reaction
1. Calculate the standard free energy change at 500 K for the following reaction. Cu(s) + H2O(g) à CuO(s) + H2(g) Hf (kJ/mol) S (J/mol·K) Cu(s) 0 33.3 H2O(g) -241…
1. Calculate the standard free-energy change (in kilojoules) at 25 °C for the re
1. Calculate the standard free-energy change (in kilojoules) at 25 °C for the reaction: O2(g) + 4H+(aq) + 4Cl-(aq) ---> 2H2O(l) + 2Cl2(g) a. -12.5 kJ …
1. Calculate the theoretical yield of aspirin obtained when 2.0 g of salicylic a
1. Calculate the theoretical yield of aspirin obtained when 2.0 g of salicylic acid and 5.0 mL of acetic anhydride (density = 1.08 g/mL) 2. if 1.9 g f asprin were obtained in this…
1. Calculate the theoretical yield of aspirin obtained when 2.0 g of salicylic a
1. Calculate the theoretical yield of aspirin obtained when 2.0 g of salicylic acid and 5.0 mL of acetic anhydride (density = 1.08 g/mL) 2. if 1.9 g f asprin were obtained in this…
1. Calculate the theoretical yields of the compounds to be prepared in this expe
1. Calculate the theoretical yields of the compounds to be prepared in this experiment. The metal ion in both cases is the limiting reagent. Hint: Find the number of moles of Cu(I…
1. Calculate the theoretical yields of the compounds to be prepared in this expe
1. Calculate the theoretical yields of the compounds to be prepared in this experiment. The metal ion in both cases is the limiting reagent. Hint: Find the number of moles of Cu(I…
1. Calculate the total mass (in kg) of nitrogen, oxygen, and carbon dioxide gase
1. Calculate the total mass (in kg) of nitrogen, oxygen, and carbon dioxide gases in the atmosphere. Assume that the total mass of air in the atmosphere is 5.25 x 1021 g. Mass of …
1. Calculate the total osmolarity of a 250 mL solution consisting of 0.02 M CaCl
1. Calculate the total osmolarity of a 250 mL solution consisting of 0.02 M CaCl2, 0.1 M NaCl and 0.05M dextrose. what percentage (%W/V) of NaCl must a solution contain to have an…
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