Identify the type of reaction applicable to the equations below: C17 H2703 + 02 - > CO2 + H,0 Zn + NaCl –> ZnCl, + Na O2 + FeF3 – > F, + Fe,O3 H,SO, + KOH – > K2SO4 + H2O | : Single replacement/Displacement : Double replacement/Displacement :: Synthesis : Decomposition : Combustion :: Neutralization
Q: Given: 0.35g NaCl, 0.25 g NaHCO3, 0.15 g KCl & 2 g C6H12O6 are present in 100 mL ORS solution (MW:…
A: Given: 0.35g NaCl, 0.25 g NaHCO3, 0.15 g KCl & 2 g C6H12O6 are present in 100 mL ORS solution…
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A: Given that - Mass of NaCl = 0.35 g Mass of KCl = 0.15 g Mass of NaHCO3 = 0.25 g Mass of C6H12O6…
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A: Mass of NaHCO3 = 0.25 g Volume of solution = 100 mL Concentration of bicarbonate = ?
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- Which of the following is a spontaneous reaction.? a. Rxn with ΔH =- 10Kj/mol ΔS= -5J/mol T= 300K b. NaCl +H20 -> NaOH + HCl 25C c. H20(l) -> H2O(s) Temp: 25C d. Dissolution of 100g of solid sugar in 100 mL ice tea. Consider following reaction: HgO (s) -> Hg(l) + ½ O2 (g) Delta H = +90.7 kj/mol. What quantity of heat in kj/mol is required to produce one mole HgO? Write your answer without units. Given the following data 2ClF(g) + O2(g) --> Cl2O(g) + F2O (g) Delta H= 167.4 kJ I 2ClF3(g) + 2O2(g) --> Cl2O(g) + 3F2 O (g) Delta H= 341.4 kJ II 2 F2(g) + O2(g) ---> 2F2O (g) Delta H= -43.4 kJ III Calculate the delta H in kJ for below reaction: ClF(g) + F2(g) ---> ClF3(g)One litre of a saturated aqueous solution of Ag2SO4 (MW = 311.79 g mol- 1) at 25 °C is evaporated to dryness. 4.844 g of Ag2SO4 residue was produced. What is the solubility product (Ksp)?Really hoping for solutions since I’m having a hard time with this. Pls. skip if unsure or not willing to answer the subitems (these are all connected for one item). Thanks in advanced. When the compounds analyzed by Robrob were passed on to the next test, anotherscientist, Kikoko, needed to determine the molecular weight of the active compound. They created a solution with a concentration of 20.0%w/w from the solid active compound and the solution had a density of 1.40 g/mL. From this solution, 10μL was taken and mixed with 190μL of reagent and water. It was analyzed and showed a concentration of 5x10-4 M compound.a. What is the concentration (in molarity) of the 20%w/w solution? b. Why was the concentration of the solution expressed as %w/w initially? c. What is the molecular weight of the active compound?
- SOLUBILITY – reactions with conc. Sulfuric acid Based from the video link --- https://www.youtube.com/watch?v=JmlDkC6IdKA&t=21s 1 mL of conc. H2SO4 was placed in a separate test tube. The test samples, cyclohexane and cyclohexene were added separately. Observe what happened after the reaction. Question: Based from your observation, write the results of the following samples: (a) Cyclohexane, (b) Cyclohexene, and (c) Toluene. Thank you very much!iven the data in the table below, ΔH°rxn for the reaction C2H5OH (l) + O2 (g) → CH3CO2H (l) + H2O (l) is ________ kJ. -79.0 -1048.0 -476.4 -492.6 The value of ΔH°f of O2 (g) is required for the calculation.An impure sample of Na3PO3 weighing 0.1 g is dissolved in 35 mL of water. A solution containing 45 mL of 3% w/v HgCl2, 30 mL of 10% w/v sodium acetate, and 10 mL of glacial acetic acid is then prepared. After digesting, filtering, and rinsing the precipitate, 0.2857 g of Hg2Cl2 is obtained. Report the purity of the original sample as % w/w Na3PO3.
- Aleks data for PbCO3 is 7.40 x 10^-14.Stoichiometric calculations. (show computations)K, a pharmaceutical scientist aims to synthesize paracetamol by reacting 3.075 mg of p-aminophenol and 2.25 milliliters of acetic anhydride to produce paracetamol and acetic acid. C6H7NO + C4H6O3 à C8H9NO2 + C2H4O2 Is the chemical reaction balanced? If yes, write YES. If not, what should be the balanced equation? What is the molecular weight of p-aminophenol? What is the molecular weight of acetic anhydride? What is the molecular weight of paracetamol? What is the limiting reactant? How many grams of paracetamol was formed? K was able to produce 1.88 grams of paracetamol. What is the percentage yield?Solution for 0.105g of the K3[Fe(C2O4)3] (MW= 437.2 g/ mol) were dissolved in sulfuric acid and got rated with 9 mL of 0.028M KMn04. What is the experimental weight percent of oxalate in the sample?
- A 0.9134-g of KIO3 is dissolved in 500-mL distilled water. A 50.0-mL aliquot portion was run down into an Erlenmeyer flask and 2-g of KI and 2-mL of 6M HCl were added to it. Directly after, the solution was titrated with a 24.47-mL Na2S2O3 solution to a faint yellow solution. Starch TS was added to the resulting solution and the titration with the Na2S2O3 solution continued wherein an additional 1.33-mL was required to bring the blue color of the solution to disappear completely. MW: KIO3 = 214.0 g/mol ; Na2S2O3 = 158.1 g/mol Compute the M of the Na2S2O3 solution. 0.1047 M None of the choices 0.1107 M 0.09926 MA 0.9000-g of KIO3 is dissolved in 500-mL distilled water. A 50.0-mL aliquot portion was run down into an Erlenmeyer flask and 2-g of KI and 2-mL of 6M HCl were added to it. Directly after, the solution was titrated with a 24.80-mL Na2S2O3 solution to a faint yellow solution. Starch TS was added to the resulting solution and the titration with the Na2S2O3 solution continued wherein an additional 1.33-mL was required to bring the blue color of the solution to disappear completely. MW: KIO3 = 214.0 g/mol ; Na2S2O3 = 158.1 g/mol Compute the N of the Na2S2O3 solution. None of the choices 0.09657 N 0.1075 N 0.1017 NThe mercury in a 0.8142-g sample was precipitated with an excess of paraperiodic acid, H5IO6: 5 Hg 2+ + 2 H5IO6 ---> Hg5(IO6)2 (s) + 10 H + The precipitate (MW = 1448.8 g/mol) was filtered, washed free of precipitating agent, dried, and weighed, and 0.4114 g was recovered. Calculate the a) % Hg (200.6 g/mol) b) % Hg2Cl2 (472.1 g/mol)