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 %)
Q: The molar ratio of lead(II) hydroxide to water from the reaction below is 2:1 Pb(OH), + 2HCI - 2H,0…
A: • The given balanced chemical equation is, Pb(OH)2 + 2HCl → 2H2O + PbCl2 • The given…
Q: If a farmer would like to prepare 1000 kg of a mixed fertilizer with a fertilizer grade of 10-10-10…
A: Fertilizer is a generally a mixture of two or more compounds that is mixed is a certain ratio and…
Q: How many litres of chlorine gas at 640 mmHg and 25 degrees C can be produced by the reaction of 2.0…
A: Welcome to bartleby !
Q: Calculate the volume in liters of acetylene produced at 26.0°C and 715 mm Hg from 0.0725 mol CaC2…
A: Given, Temperature (T) =26 °C = 26+273 =299 K Pressure (P) = 715 mm Hg = 715760 = 0.94 atm (Note…
Q: Commercial perchloric acid (100.46 g/mol) 71% (w/w) with specific gravity of 167 was diluted by…
A: Given data w/w% of perchloric acid = 71 % molar mass of perchloric acid = 100.46 g/mole specific…
Q: You need to make 1.0 L of a bu CH3COOH and NaCH3COO answers with reasonable ratio Ka for CH3COOH =…
A:
Q: QI/Prepare 0.1N of CH,COOH in 500 mL, Specific gravity 1.05 gm/cm and percentage 99.5% ?
A: Pipette out 3 ml concentrated CH3COOH (17.4 N) in a 500 ml volumetric flask and dilute it up to the…
Q: Q: Solution of 396g of Zn(OH)2 has normality [ 4.8 eqv.\L] added to 1330ml water. What is the Vol.%?…
A: given:mass of Zn(OH)2=396gnormality =4.8 eqN/Lvolume of water = 1330 mlTo…
Q: solution, and bubbling the resulting CO2(g) product in water that is at exactly 29 °C. After the…
A: Given : Pressure of CO2 gas = 755.2 torr = 755.2/760 atm Volume of CO2 gas = 44.37 ml Temperature…
Q: Use the Mol S₂032 consumed and Mol la produced from the table above for the calculations in Table 2…
A: To determine the initial concentration of thiosulfate ion, I3- produced, persulfate ion, I- at the…
Q: The combustion of liquid ethanol (C2H5OH)(C2H5OH) produces carbon dioxide and water. After 4.63 mLmL…
A: The balanced chemical equation for the combustion of liquid ethanol can be written as follows:…
Q: determine: 1) the limiting reagent, 2) the moles of each reactant left over, and 3) volume (in L) of…
A: The decomposition of CaCO3 is CaCO3 (s) → CaO (s) + CO2 (g). The mole ratio of the equation is…
Q: In 1897 the Swedish explorer Andreé tried to reach the North Pole in a balloon. The balloon was…
A: According to ideal gas law (applying for the H2 gas), PV = nRT where P = pressure = 1 atm V =…
Q: Electrolytic manganese dioxide can be prepared from manganese carbonate ore by crushing, milling and…
A: Preparation of manganese dioxide from magnesium carbonate ore by crushing, milling and leaching the…
Q: [References] In 1897 the Swedish explorer Andreé tried to reach the North Pole in a balloon. The…
A: Given: Volume of Balloon = 4800 m3 loss of gas during filling = 20 % Temperature = 0 oC = 273.15 K…
Q: The % purity of a powdered crude sample of Na^2CO^3 containing only inert impurities is to be…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: If a bag of fertilizer were labeled as containing 35% K2O, a. What is the analysis when…
A: Since the given question is a multiple question , hence I solved first question according to rules.…
Q: 0.018 0.016 0.014+ 0.012 + 0.01 0.008 0.006 0.004 0.002 + 10 20 30 40 50 60 70 80 90 Time(min) From…
A: In chemistry, chemical kinetics deals with the kinetics of the reaction and given very useful…
Q: In the preparation of 60 mL Magnesium citrate in the laboratory, you are required to:calculate for…
A: Given, Mass of (MgCO3)4 .Mg(OH)2 .5H2O = 2.57 g Molar mass of (MgCO3)4 .Mg(OH)2 .5H2O = 485.65…
Q: Commercial perchloric acid (100.46 g/mol) 71% (w/w) with specific gravity of 1.67 was diluted by…
A: Given: %(w/w) of perchloric acid i.e. HClO4 = 71 %. Volume of HClO4 solution taken = 30.00 mL…
Q: Determire He average, excluding any trails thal fall outside 0, 0005 M of thte average, O o,…
A: Outliers in a series of a values is the one which lie outside most of the other values. For example…
Q: scribe the preparation of 150 mL of 6.00 M H3PO4 f at is 86% H3PO4 (w/w) and has the specific…
A: Given data set: Volume of H3PO4 = 150 ml Molarity of H3PO4 = 6.00 M Specific gravity= 1.71 W/w% =…
Q: Volumetric analysis of the products of combustion of an unknown hydrocarbon, measured on a dry…
A:
Q: What is the density of 47.0 wt% aqueous NaOH (FM 40.00) if 17.6 mL of the solution diluted to 1.80 L…
A: Here we have,47.0 wt% (0.47%) aqueous NaOH (FM 40.00) [47 g NaOH in 100 ml water]Volume of NaOH…
Q: In the preparation of 60 mL Magnesium citrate in the laboratory, you are required to: calculate for…
A: The volume of carbon dioxide produced during the formation of magnesium citrate from the reaction of…
Q: Acrylonitrile and water are produced from propene, ammonia, and oxygen in a 2 L vessel by the…
A: In this question, we have to find out the correct answer of given problem by the help of the…
Q: Souring of wine occurs when ethanol is converted to acetic acid by oxygen: C2H5OH(l)…
A: a. When oxygen is leaked into the wine, it reacts with ethanol forming acetic acid and water. 1…
Q: In 1897 the Swedish explorer Andreé tried to reach the North Pole in a balloon. The balloon was…
A: The balanced reaction taking place is given as, => Fe (s) + H2SO4 (aq) ------> FeSO4 (aq) + H2…
Q: FeS can be roasted in O2 to form FeO: 2FeS + 3O2 → 2FeO + 2SO2 If the slag (solid product)…
A: Extent of the reaction (0 determines how long the reaction had proceeded. The extent of reaction is…
Q: Prepared 1 M of NaCl solution in volume 100 ml, Mwt is 58.5? O 0.585 gm. O 5.85 gm. O 58.5 gm.
A: Number of moles is calculated by dividing the given mass with molecular mass.
Q: Oxyacetylene torches rely on a precise mixture of fuel (C2H2(g)) to oxygen to optimize the welding…
A:
Q: Determine the production of CO, for the classroom in the course of 0.75 hours, being the volume 185…
A: Given, Time = 0.75 hours Production of CO2 / person =0.018 m3/h Outdoor concentration = 390 ppm…
Q: The concentration of arsenic in an insectide is determined gravimetrically by precipitating…
A:
Q: Determine the percentage Fe in a sample of limonite from the following data: -Sample : 0.5000g…
A: Percentage composition simply it means amount of element present relative to total amount of…
Q: An excess of hydrochloric acid is added over 10g of marble (impure CaCO,). A reac- tion takes place…
A: a) The chemical equation is given as: CaCO3(s)+2HCl(aq)→CaCl2(aq)+H2O(l)+CO2(g) The volume of CO2…
Q: Suppose thent in a eYperime nt (67 Mb & ydrosen gas was Callected I temp of 27°C. at the pssure 771…
A: Applying gas equation PV= nRT
Q: Commercial perchloric acid (100.46 g/mol) 71% (w/w) with specific gravity of 1.67 was diluted by…
A: Given: %(w/w) of perchloric acid i.e. HClO4 = 71 %. Volume of HClO4 solution taken = 15.00 mL…
Q: BN
A: Ratio in molar mass = ( molar mass of I2 / molar mass of Br2 ) Ratio in Molar mass = ( 126gmol-1 /…
Q: racter. Oxya cetylene torches rely on a precise mixture of fuel (C,H;(9) to coxygen to optimize the…
A:
Q: What volume of CO2 is produced from 1.64 moles ofa O2 at Standard Temperature and Pressure (STP)?…
A:
Q: Commercial perchloric acid (100.46 g/mol) 71% (w/w) with specific gravity of was diluted by taking…
A: Given: %(w/w) of perchloric acid i.e. HClO4 = 71 %. Volume of HClO4 solution taken = 15.00 mL…
Q: Oxyacetylene torches rely on a precise mixture of fuel (C₂H₂(g)) to oxygen to optimize the welding…
A:
Q: Commercial perchloric acid (100.46 g/mol) 71% (w/w) with specific gravity of 1.67 was diluted by…
A: Given: %(w/w) of perchloric acid i.e. HClO4 = 71 %. Volume of HClO4 solution taken = 15.00 mL…
Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of…
A:
Q: Chalcopyrite (CuFeS2), is an important source of copper. A typical chalcopyrite ore contains about…
A: Introduction: When CuFeS2 is roasted in presence of oxygen the following reaction occurs, 2CuFeS2 +…
Q: Average AG°= 43,42 AH°= . AS°= (Note: the slope of the best fit line is equal to -AS° rather than…
A: Given data:
Q: Each part per million (ppm) concentration of CO2 in the atmosphere is the equivale global…
A: There probably is more carbon dioxide in the air now than at anytime in 3 million years A plant…
Q: How many litres of chlorine gas at 650 mm Hg and 25 degrees Celisus can be produced by the reaction…
A: Given, Reaction equation: MnO2(s) + 4HCl(aq) = MnCl2(aq) + 2H2O(l) + Cl2(g) Here, 1 mol MnO2(s)…
Q: Suppose 295 gof NO3 flows into a swamp each day. What volume of N2 would be produced each day at…
A:
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 %)
Step by step
Solved in 2 steps with 5 images
- 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 to 0.005317 g Fe -FeSO4 used = 6.00 ml -1.000ml FeSO4 is equivalent 0.009200 g FeO0.1745 g of primary standard Na2C2O4 is used to set a freshly prepared KMnO4 solution and 30.24 mL of KMnO4 solution is spent at the turning point. Since 36.92 mL of this KMnO4 solution is consumed for the determination of iron in 0.5618 g ore sample, calculate the amount of iron in the ore in terms of % iron (III) oxide and % iron (III) chloride. (Fe: 56, K: 39, Mn: 55, O: 16, Na:23, C: 12, Cl: 35.5 g/mol) (Please type answer)Oral rehydration salts are stated to contain the following components: Sodium Chloride 3.5g Potassium Chloride 1.5g Sodium Citrate 2.9g Anhydrous Glucose 20.0g 8.342 g of oral rehydration salts are dissolved in 500 ml of water. 5 ml of the solution is diluted to 100 ml and then 5 ml is taken from the diluted sample and is diluted to 100 ml. The sodium content of the sample is then determined by flame photometry. The sodium salts used to prepare the mixture were: Trisodium citrate hydrate (C6H5Na3O7, 2H2O) MW 294.1 and sodium chloride (NaCl) NW 58.5. Atomic weight of Na = 23. The content of Na in the diluted sample was determined to be 0.3210 mg/100 ml. Determine the % of stated content of Na in the sample.
- e 6.30 L of 0.262 M NaOH from the concentrated commercial reagent [50% NaOH (w/w), sp gr 1.525]. Take mL of the concentrated reagent and dilute to 6.3 L with water. f 3.90 L of a solution that is 16.0 ppm in K*, starting with solid KĄ Fe (CN),. Dissolve mg K4 Fe (CN)6 in enough water to give a final volume 9, of 3.9 L.Oral rehydration salts are stated to contain the following components: Sodium Chloride 3.5g Potassium Chloride 1.5g Sodium Citrate 2.9g Anhydrous Glucose 20.0g 8.342 g of oral rehydration salts are dissolved in 500 ml of water. 5 ml of the solution is diluted to 100 ml and then 5 ml is taken from the diluted sample and is diluted to 100 ml. The sodium content of the sample is then determined by flame photometry. The sodium salts used to prepare the mixture were: Trisodium citrate hydrate (C6H5Na3O7, 2H2O) MW 294.1 and sodium chloride (NaCl) NW 58.5. Atomic weight of Na = 23. The content of Na in the diluted sample was determined to be 0.3210 mg/100 ml. Determine the % of stated content of Na in the sample. The stated should be 104.5, how??A sample of processed meat scrap weighing 4.000 g is digested with concentrated HSO. and Hg(catalyst) until the N present has been converted to NHHSO.. This is treated with excess NaOH, and the liberated NHs is caught in a 100-ml of H.SO. ( Iml 0.01860 g Na:OJ. The excess acid requires 57.60 ml of NaOH ( ImL = 0.12660 g potassium acid phthalate, KHCaH.OJ. Calculate the percentage protein in the meat scrap 4.
- From 0.8 av. lb of 20% w/w KOH solution, 72.6 O 121 142 86.2 Next g of 12 percent w/w KOH may be produced.A 0.879 g sample of a CaCl2·2H2O/K2C2O4·H2O solid salt mixture is dissolved in ~100mL of deionized water. The precipitate, after having been filtered and air-dried, has a mass of 0.284 g. The limiting reactant in the salt mixture was later determined to beCaCl2 ·2H2O. a.Write the ionic equation for the reaction. b.Write the net ionic equation for the reaction. c.How many moles and grams of CaCl2 ·2H2O reacted in the reaction mixture? d.How many moles and grams of the excess reactant, K 2C2O 4H2O, reacted in the mixture? e.How many grams of the K2C2O4·H2O in the salt mixture remain unreacted (inexcess)? f.What is the percent by mass of each salt in the mixtureHow much amount of solids (in grams) do you need to prepare the following solutions? 1. 500.0 mL 0.1000 M stock EDTA solutiona. Weigh an appropriate amount of Na2H2EDTA2H2O (FW=372.24) to the nearest 0.1 mg 2. 100.0 mL 0.0500 M stock Ca2+ solutiona. Weigh appropriate amount of pure CaCO3 (FW=100.09) to the nearest 0.1 mg into a 250 mL beaker.
- An unknown sample containing a mixture of NaCl and Na2CO3 was analyzed to determine the % composition of each compound. In the analysis for Na2CO3 (soda ash), the following data were obtained mass of unknown - 0.4436 g conc. of HCl used - 0.25 N initial volume - 0.5 mL final volume - 20.0 mL (MW soda ash) 106.12) 1.) What method was used to determine the concentration of HCl? 2.) What is the net volume of HCl used in the titration? 3.) What is % Na2CO3 in the given sample? NOTE: Round off your answer to a whole number (2 sig fig)An unknown sample containing a mixture of NaCl and Na2CO3 was analyzed to determine the % composition of each compound. In the analysis for Na2CO3 (soda ash), the following data were obtained mass of unknown - 0.4436 g conc. of HCl used - 0.25 N initial volume - 0.5 mL final volume - 20.0 mL (MW soda ash) 106.12) 1.) What method was used to determine the concentration of HCI? 2.) What is the net volume of HCI used in the titration? 3.) What is the % Na2CO3 in the given sample? NOTE: Round off your answer to a whole number (2 sig fig)What is the percent magnesium hydroxide, if a sample of magnesia magma weighing 5.2430g when dissolved in 25 mL of 0.9915 N H2SO4 required 9.85 mL of 1.4102 N NaOH to titrate the excess acid? Round to 2 decimal point; Answer should be with the correct unit.