35. Given 10g of MgC12 and 16g of AGNO3 and an actual yield of 1.099g of AgCI. How much excess reagent REMAINS UNUSED after the reaction? Rxn: _MgC12 + _A9NO3- >_ A9CI + _Mg(NO3)2 11.21 g 5.51 g 7.01 g 2.51 g None of the above
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- Determine the percentage Fe in a sample of limonite from the following data:Sample : 0.5000g ; KMnO4 used = 50.00 ml ; 1.000ml of KMnO4 is equivalent 0.005317 g Fe,FeSO4 used = 6.00 ml; 1.000ml FeSO4 is equivalent 0.009200 g FeO ( ans 44.59 %)Mass of crude Acetanilide = 0.508 Mass of filter paper = 0.800g Filter paper + pure Acetanilide = 1.153g Mass of pure Acetanilide = ? % recovery = ? Mpt of recrystallized Acetanilide =112 C – 114 C Mpt of crude Acetanilide = 97 C – 110 CAn 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.
- Calculate the theoretical yield for the reaction based on 2.0g of 2-methyl-3-pentanol (MW= 102.18g/mol) and 2.0 mL of the 48%HBr -(show calculatins for both reactions ) -molecular weight of product must be determined based on the structure -identify theoretical yeild on the limiting reagent.Explain why it is problematic to include a constraint such as the following in an LP model for a blending problem: Total octane in gasoline 1 blend $ divided by Barrels of gasoline 1 blended daily which is greater thanor equal to 10Given a reaction mixture of 40 mols of ethylebe glycol, 40 mols terephthalic acid, and 1.2 mol benzoic acid, what value of Xn would be expected if complete conversion (p = 1) of limiting factor were completed?
- Why do you multipy the # of H2S mols by 4, when 4 corresponds to the reactory amount of O2?The logic there is somewhat confusing to me.I understand how/why you found out the mols of the equation but dividing the sample's MM by the equation confuses me.A 0.2500-g of dry CaCO3 was completely dissolved into a solution of 5-mL conc. HCl and 50-mL distilled water in an erlemeyer flask. The resulting solution was boiled for 5 minutes to expel CO2 from the reaction, and then it was cooled to room temperature and the solution was transferred in a 500-mL volumetric flask filled to volume by rinsing the erlenmeyer flask and combining all the washings to fill the mark. A 5.0-mL aliquot of the CaCl2 solution was taken from the orignal solution and was transferred into an erlenmeyer flask with 10-mL NH3 buffer, 20-mL distilled water, and 5 gtts of EBT. The solution consumed 4.96 mL of an EDTA solution. MW: CaCO3 = 100.1 Compute for the N EDTA solution. 0.0053 N 0.0531 N 0.5313 N None of the choicesIn a similar experiment, the mass of 3 PB tablets was measured to be 3.1823 g. The tablets were crushed, and 2.9801 g of the powder was transferred to a beaker and reacted with HCl. After filtration, the filtrate was transferred to a 50-mL volumetric flask and diluted with water. 10.00 mL of this stock solution was combined with 0.2 M Na3PO4. The resulting precipitate weighed 0.2425 g after drying. What is the mass of BSS per tablet in mg?Round your answer to 1 decimal place.
- Suppose you have a soil that is made up of 10% organic matter with CEC = 200 cmol/kg, 40% kaolinitewith CEC = 10 cmol/kg, and 50% vermiculite with CEC = 100 cmol/kg.1- Calculate the overall CEC of the soil by taking a weighted average of the three soil components.2- What percentage of the overall CEC is contributed by the organic matter? How does that numbercompare to the 10% of the soil itself that is organic?A 0.1093-g sample of impure Na2CO3( Molecular weight 106) was analyzed by the Volhard method. After adding 50.00 mL of 0.06911 M AGN03 (Molecular weight 169.87), the sample was back titrated with 0.05781 M KSCN, requiring 27.36 mL to reach the end point. Report the purity of the Na2CO3 sample.In an Orsat analysis the % CO2 of the product of the combustion is 20% . If percent excess air is 30% . find the maximum percentage of CO2 attainable.