Where stated, classify reactions both by the key reaction event (PPT, A/B, R/O) and by changes in composition (COM, DEC, SDP, DDP). 11. ClO2(g) + – H2(g) → HCI(g) + _ H20(g) balance, then classify: Calculate the following, with proper number of significant figures:
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- A) An aqueous solution of sodium nitrate, NaO3, is made by dissolving 21.6 grams of sodium nitrate in sufficient water in a 500. mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the weight/volume percentage of sodium nitrate in the solution? Weight/volume percentage = _______% B) An aqueous solution of ammonium fluoride, NH4F, is made by dissolving 32.4 grams of ammonium fluoride in sufficient water in a 500. mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the weight/volume percentage of ammonium fluoride in the solution? Weight/volume percentage = ________%A 800.0 mL aqueous solution of 93.0 mM CoCl2 is combined with 399.0 mL of aqueous 54.0 mM K3PO4. If the limiting reagent is completed consumed during this reaction, how many grams of solid precipitate will be produced? Express your answer in units of grams using at least three significant figures.The fish canning industry has a waste effluent with the specification as follows: BOD5 = 150 mg/L, COD = 230 mg/L, CaCO3 = 65 mg/L, pH = 7,0, Odor = 11 (TON, where every 1 mg/L ammonia-N equals to 2 TON), Oil = 300 mg/L. Give recommendation of what kind of treatment (physical and chemical steps) is required to treat the wastewater, and why do you select those steps.
- A solution is prepared by dissolving 155.0 mL of methanol (CH3OH, density = 0.791 g/mL) in 250 mL of water (density 1.00 g/mL) to give a final solution volume of 350.0 mL. Calculate the (a) molarity of the solution, (b) %wt/wt, (c) %wt/vol, (d) %vol/volGiven Active Ingredient: precipitated sulfur (ointment) Raw Materials: 500 g calcium polysulphide and 1.5 kg hydrochloric acid Actual Yield: 343.4g precipitated sulfur Formulation: 250 mg per jar Dosage form: Ointment packaging:100 jars per box Synthesis and Packaging (Need answer)- Balanced Chemical Equation:- % composition by mass of each compound:- Mass to Mass Stoichiometry Calculation:- Limiting Reagent:- Excess Reagent:- Amount (g) in excess: % Yield:- Number of dosage form and packaging that can be produced from stoichiometric solution:A 244.5-g sample of ground water is analyzed for calcium. The Ca2+ in the sample is first precipitated and filtered-off as NH4CaPO4.7H20. This precipitate is dried and heated, releasing water and ammonia to yield anhydrous calcium pyrophosphate (CaP2O7). The mass of CaP2O, obtained is 0.0419 g. Give the calcium content of the ground water in parts per million (to three significant figures).
- What is the correct volume of 2.5 M PhMgBr in THF is needed to completely react with 1.5 mL of methyl benzoate? You do not need to consider an excess and should calculate (and choose) the minimum amount as required by the reaction stoichiometry). Enter your answer to one decimal place WITH the proper unit of measurement.GRAVIMETRIC ANALYSIS OF A TWO COMPONENT MIXTURE A mixture of NaHCO3 and Na2CO3 reacts with hydrochloric acid solution to produce three common products, sodium chloride, carbon dioxide and water according to the following balanced chemical equations. NaHCO3(s) + HCl (aq) → NaCl(s) + CO2(g) + H2O(l) (1) Na2CO3(s) + 2HCl(aq) → 2NaCl(s) + CO2(g) + H2O(l) (2) Mass of mixture (gr) = mass (gr) of NaHCO3 + mass (gr) of Na2CO3 (3) Mass of NaCl (gr) = mass (gr) of NaCl formed + mass (gr) of NaCl formed (4) from the NaHCO3 from the Na2CO3 NOTE!!! Fill-out the tabulation below. Present the complete solution for the determination of the unknown amounts.In the standardization of HCl using pure anhydrous sodium carbonate as the primarystandard for methyl orange as an indicator, 1.0 mL HCl was found to be equivalent to 0.05gof sodium carbonate (MW =106). The normality of HCl is:
- An unknown sample containing citric acid (C6H8O7) was analyzed using 0.2347N NaOH. The following data were obtained in one of the trials of the analysis: Mass of Unknown 0.4232 g Initial reading of NaOH 2.50 mL Final reading of NaOH 28.00 mL Write the balanced chemical equation involved. What is the net volume of NaOH reacted? What is the molar mass of citric acid? Calculate % citric acid in the sample.An aqueous solution of potassium sulfate, K2SO, is made by dissolving 27.6 grams of potassium sulfate in sufficient water in a 300. mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the weight/volume percentage of potassium sulfate in the solution?Weight/volume percentage = %Zinc and magnesium react with hydrochloric acid to produce the metal chlorides and hydrogen gas. A 10.00 gram smaple of a mixture of Zn and Mg was with the stoichiometric quanitity of HCl. The reaction mixture was then reacted with 156 mL of 3.00M silver nitrate to produce the maximum quantity of silver chloride. First determine the % magnesium in the mixture- then, if 76.0 mL of HCl was added, what was the molarity of the HCl?