Q: define phase chaneg and calculate the amount of each phase present in 15 kg of 60 wt% Pb-40 wt% Sn…
A: Phase change is defined as the change in the physical state of the component or the change in the…
Q: In order to plate a steel part having a surface area of 0.13 m2 with a 0.05 mm thick layer of…
A:
Q: A 1.1324 g sample of magnetite ore was dissolved in concentrated HCl to give a solution that…
A: Mass of Fe = 55.845 g/molMass Fe2O3 = 159.69 g/mol
Q: What is the relative amount in percentage of η phase in 90 wt% Zn-10 wt% Cu at 400°C
A: In an alloy, components represent the elements and compounds mixed initially to form that alloy.…
Q: A 0.250M solution of Na2C2O4 is to be used in a reaction in which the C2O42- will be oxidized to…
A: Molarity is 0.250 M Normality =?
Q: If a clay mineral with a cation exchange capacity (CEC) of 25 meq/100g is in equilibrium with a…
A: Answer:-
Q: a.) vapor phase composition S 92 F
A:
Q: The most important commercial ore of chromiumis chromite (FeC r 2 O 4 ). One of the steps in…
A: Given Chemical reaction 2 C(s) + FeCr2O4(s) → FeCr2(s) + 2 CO2(g)…
Q: Compute for the composition, in atom percent, of an alloy that consists of 92.5 wt% Ag and 7.5 wt%…
A: Given data : Wt% Ag = 92.5 Wt% Cu = 7.5
Q: Chalcopyrite (CuFeS2), is an important source of copper. A typical chalcopyrite ore contains about…
A: We are given that a chalcopyrite ore consists of 0.75% Cu and its density is 2.6g/cm3, and is…
Q: Q/ Correct the under line words 1-Ferrous alloys above 6.67%ls has structure of FeC+ Cementite.
A:
Q: f AH for the process H20(g) H2O(1) is:
A:
Q: The magnetic susceptibility, lefi, of a sample of solid K3COF, at room temperature as measured using…
A: The answer is attached below-
Q: 5. Permanganatometry is used to quantify? A) Iron (II) sulfate B) Zinc sulfate C) Silver nitrate D)…
A: Permanganometry is one of the techniques used in chemical quantitative analysis. It is a redox…
Q: A student investigated the stoichiometry of the nickel (II) nitrate - sodium sulfide - water system…
A: The reactants given are Ni(NO3)2 and Na2S.
Q: chalcopyrite (cufes2) is an important ore contains about 0.75% cu. what volume of sulfur oxide at 25…
A: Introduction The most prevalent copper ore mineral is chalcopyrite, a copper iron sulfide. CuFeS2…
Q: a 250 g steel contains ca2c. what is the of %c in the steel? number of moles in 100g Fe(OH)2? Mass…
A: Stoichiometry involves the calculation of concentration and moles in the given conditions of mass,…
Q: Chalcopyrite (LaTeX: CuFeS_2C u F e S 2), is an important source of copper. A typical chalcopyrite…
A: Chalcopyrite (CuFeS2) is an ore of Sulpfur. It gives CuO or CuS upon roasting which is furthur…
Q: The gravimetric analysis of a 11.432-gram sample of silver ore yields 4.918 grams of silver iodide…
A: 1- First determine the mass of silver metal in the ore : a) moles of AgI = [ Mass / Molar mass of…
Q: (g) The material 60-40 Solder contains 60 wt% Sn and 40 wt% Pb. Calculate the composition of the…
A:
Q: 10. In Fe-C alloys that have been heated to form 100% austenite, which of the following is created…
A:
Q: What is the normality of a nitric acid solution to be used as an oxidizing agent (reduced to NO) if…
A: The mass of solute (in g) present in 100 g of the solution is known as the w/w percent concentration…
Q: An element "A" with an atomic weight of 39.23 g/mol is added to a pure element of "Z" with an atomic…
A: Given, Atomic weight of element A = 39.23 g/mol Atomic weight of element Z = 21.39 g/mol Weight…
Q: An iron ore has a 55% Fe2O3 with 5% moisture content. What is the Percentage of Fe2O3 in a dry…
A:
Q: Match each statement in the left column of the table below with a compound on the right. In your…
A: The physical and chemical properties of compound are associated with the structure of its molecules.…
Q: What is the composition, in atom percent, of an alloy that contains 44.5 lbm of silver, 83.7 lbm of…
A: Percent composition of substance can be calculate by using the following formula % composition…
Q: An ore was found to contain iron and ferric oxide, if 0.5g of the ore, after solution in acid and…
A:
Q: 6. A stock solution of iron was prepared by dissolving 1.452g FeCl3 in water, reacting with…
A: Given: Preparation of stock solution 1.452 g FeCl3 in water, reacting with thiocyanate to form…
Q: Think that an alloy Cu-60wt%Ag is slowly cooled from the Liquid Phase Field. How many grams of…
A:
Q: ; The density (g/cm3) of the solid is:
A:
Q: A sample of ferrous oxide has actual formula Fe93O1.00. In this sample what fraction of metal ions…
A:
Q: Fill in the following brackets. Three Total Arsenate (As5+) is an analog of ["nitrate", "calcium",…
A: Arsenate is impurity present in water
Q: Magnesium Chloride is available as magnesium chloride hexahydrate in an injectable solution that…
A: Magnesium chloride hexahydrate is MgCl2.6H2O
Q: Chemistry Explain why manganese which has an average minimum exploitable grade of 35% has a higher…
A: The concentration factor is defined as the ratio of average concentration of an element in a mineral…
Q: 3. When the first half of the solution containing NaCl and KCI, obtained from 2 g of a feldspar…
A: Weight of feldspar= 2 g 2KCl + H2PtCl6 K2PtCl6 + 2HCl Molar mass of KCl = (39+35.5) = 74.5 g/mol…
Q: How many milligrams of a preservative are needed 4 fl.oz of a solution containing 0.12%(w/v) of that…
A: given, the volume of solution = 4 fl.oz %(w/v) = 0.12%
Q: Chalcopyrite, CuFeS2, is an important source of copper. A typical chalcopyrite ore contains about…
A: Volume of chalcopyrite (CuFeS2) = 4.00 x 103 ft3 Density of chalcopyrite (CuFeS2) = 2.6g/cm3…
Q: A newly-discovered iron ore was examined to determine percent iron in the ore gravimetrically. 5.408…
A: The molar mass of iron (III) oxide (Fe2O3) =159.69g/mol The molar mass of Fe = 55.85g/mol and molar…
Q: If 2.376 g of steel gave 0.402 g of Ni(DMG)2, what is the wt% Ni in the steel?
A: Molar mass of Ni(DMG)2 = 58.69 + 2 (116.12) = 290.39 g/mol…
Q: 2. What is the effect of the nature of solvent on the electrical conductivity of solutions?
A: Conductivity in an electrolytic solution is due to movement of ions. More the ions more the…
Q: 2. The addition of dimethylglyoxime, H;C4H6O2N2, to a solution containing nickel(ll) ion gives rise…
A: Solution -
Q: An empty evaporating dish weighs 20.000 g. An unknown mixture containing Fe, NaCl, and SIO2 is dded…
A: SOLUTION : Given data are : weigh of empty evaporating dish = 20.000 g evaporating dish + mixture…
Q: 4.14 What is the composition, in atom percent, of an O alloy that consists of 5.5 wt% Pb and 94.5…
A: 4.14 Weight % of Pb = 5.5 %Weight % of Sn = 94.5 %The atomic weight of Pb is 207.2 a.m.uThe atomic…
Q: Chalcopyrite (CuFeS2), is an important source of copper. A tyYpical chalcopyrite ore contains about…
A: Ore is a substance from which metal can be extracted easily and economically. Various ores of copper…
Q: What mass (in grams) of Na2S2O3 is needed to dissolve 0.44 g of AgBr in a solution volume of 1.0 L,…
A:
Q: What is the composition of the solid for an alloy with a composition of 50% Ni at 1300°C? Give your…
A: A question based on phase diagram that is to be accomplished.
Q: Thallium(I) sulfide is a blue-black lustrous crystal that was once used to manufacture…
A: Thallium reacts with sulfur to form thallium sulfide. The equation for the balanced chemical…
4.15
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- What is the composition, in atom percent, of an alloy that consists of 30 wt% Zn and 70 wt% Cu? What is the composition, in weight percent, of an alloy that consists of 6 at% Pb and 94 at% Sn? Calculate the composition, in weight percent, of an alloy that contains 218.0 kg titanium, 14.6 kg aluminum, and 9.7 kg vanadium. What is the composition, in atom percent, of an alloy that contains 98 g tin and 65 g lead? What is the composition, in atom percent, of an alloy that contains 99.7 lbm copper, 102 Ibm zinc, and 2.1 lbm lead?21 ETRY AND REDOX REACTIONS If 20% by weight of nitrogen is present in a compound, the molecular weight of the compound may be (a) 144 (c) 100 (b) 28 d) 140 The mineral haematite is Fe2O3. Haematite ore contains unwanted material called gangue in addition to Fe2O3. If 5.0 kg of ore contains 2.78 kg of Fe, What is percentage purity of Fe;O;? A polystyrene, having formula B33C6H2(C&H3)n was prepared by heating styrene with tribromobenzoyl peroxide in the absence of air. If it was found to contain 10.46% bromine by weight, find the value of n. Hexachlorophene, C13H6C16O2, is a germicide in soaps. Calculate weight percent of each element in compound. Determine the empirical formula of Kelvar, used in making bullet proof vests, if it contains 70.6% C, 4.2% H, 11.8% N and 13,4% O: (a) CHSNO2 (c) CH9NO (b) CHSN20 (d) CHSNO In an organic compound of molar mass 108 gm mol C, H and N atoms are present in 9: 1 :3.5 by weight. Molecular formula can be: CaH&N2 7c) CsH&N 8. (b) CHoN (d) CaHN A…A 0.8965g ore sample is dissolved in nitric acid and then filtered. The aluminum is present in solution as AP". The solution is made basic with ammonium hydroxide, NH,OH, and the aluminum hydroxide, Al(OH)» (FW 78.004), precipitates. This gel is filtered in a porous glass crucible, rinsed with dilute ammonium hydroxide, ignited, cooled in a desiccator, and weighed. The resulting alumina, Al;O; (FW 101.94), weighed 0.1605 g. Why is the solution filtered after acid dissolution? Why rinse with ammonium hydroxide solution? What chemical transformation takes place during ignition? (Show the balanced chemical equation) • Why use a desiccator during cooling? Calculate the weight percent Al (AW 26.9815) in the sample. Al(OH)) -> Al;O, + H0
- 8. A 2.856-g sample of limestone was analyzed for Fe, Ca, and Mg. The iron was determined as Fe;Os, yielding 0.04561 g. Calcium was isolated as CaSO4, yielding a precipitate of 1.487 g, and Mg was isolated as 0.1599 g of Mg;P2O7. Report the amount of Fe, Ca, and Mg in the limestone sample as %w/w FeO, %w/w CaO, and %w/w MgO.A 0.2795-g sample of an organic mixture containing only C6H6Cl6 (290.83 g/mol) and C14H9Cl5 (354.49 g/mol) was burned in a stream of oxygen in a in a quartz tubeb. The products (CO2, H2O and HCl) were passed through a solution of NaHCO3. After acidification, the chloride in the solution yielded 0.7161 g of AgCl (143.32 g/mol). Calculate the percentage of each halogen compound in the sample. A mixture containing only FeCl3 (162.21) and AlCl3 (133.34) weighs 5.95 g. The chlorides areconverted to the hydrous oxides and ignited to Fe2O3 (159.69) and Al2O3 (101.96) The oxidesmixture weighs 2.62 g. Calculate the percent Fe (55.85) and Al (26.98) in the original mixture.Qu The amount of calcium carbonate with MM:100.1 g/mol in the ore dolomite can be determined by gravimetry. The dolomite sample is dissolved in acid and the calcium ions (Ca2*) present are precipitated as calcium oxalate (CaC204) with MM: 128.1 g/mol. The calcium oxalate is filtered, dried and strongly heated to form calcium oxide (Cao) with Formula Mass (FM) = 56.1 g mol". In one analysis the mass of dolomite used was 3.72 %3D g. The mass of calcium oxide formed was found to be 1.24 g. Questions: 1. What is the chemical formula of the analyte in this problem? 2. What is precipitating agent? 3. Give the molecular formula of the precipitate measured in this problem. g. 4. What is the mass(g) of the analyte? Show your answer in correct no. of SF. 5. What is the % w/w of the analyte in the sample? Give the answer in correct answer of SF. 026.9 033.3 056 060.1 02.23
- In the alloy containing sn pb and cd, the mole ratio sn/pb is 2.73/1 and the mass ratio of pb/cd is 1.78/1, the percentage of cd by mass in the alloyOres with as little as 0.25% by mass of copper are used assources of the metal. (a) How many kilograms of such an ore would be needed for another Statue of Liberty, which contains 2.0X10⁵ lb of copper? (b) If the mineral in the ore is chalcopy-rite (FeCuS₂), what is the mass % of chalcopyrite in the ore?0.1745 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)
- 400 L Question 2 300 Liquidus An alloy has a composition of 35wt% Pb – 65wt% Sn at 182.999 °C, determine: Solidus Liquidus L+B a + L 200 (1) The amount of the a and B phases in wt.% 19 183° 97.5 61.9 (2) The amount of proeutectic B phase in wt.% Solvus Solvus- (3) The amount of eutectic ß phase in wt.% 100 a + B Pb 40 60 80 Sn Weight percent tin Temperature (°C) 20When the high-temperature superconductor yttrium barium copper oxide is heated under flowing H,, the solid remaining at 1000°C is a mixture of Y,O,, BaO, and Cu. The starting material has the formula YBa, Cu,0,-, in which the oxygen stoichiometry varies between 7 and 6.5 (x = 0 to 0.5). %3D 1000°C YBa, Cu, O, (s) + (3.5 – x)H,(g) FM 666. 19-16.00x -Y,0,(s) + 2 BaO(s) + 3 Cu(s)+(3.5 – x)H,O(g) YBa, Cu,Oss Thermogravimetric analysis. When 37.329 mg of YBa, Cu, O, , were subjected to this analysis, 34.435 mg offsolid remained after heating to 1000°C. Find the value of x in YBa, Cu,O, - Propagation of error. Suppose that the uncertainty in each mass is +0.002 mg. Find the uncertainty in the value of x.A series of reactions is carried out on the alloy (A) formed of two metals, as in the following scheme : Amount of ppt. (B) +H2SO4(aq) +NAOH(ag) +NaOHçaq) Decreases and a Alloy Aqueous solution Ppt. (B) white green ppt. remains What are the two metals forming alloy (A)?.. a) Copper and aluminum b) Copper and iron c) Iron and aluminum d) Iron and lead.