The diagram shows twometals, A and B, which melt at1000°C and 1400°C. State theweight percentage of theprimary constituent (grains ofC) that would be obtained bysolidifying a 20% alloy of B.1000°Ca+LL+C900°С12αa+C451200 CL+y140096C+Ya+ß800°C700°CC+B9692a+B010203040506070 80 90 100A% peso BB

Answer:Explanation:The phase diagram helps determine phase composition using the **lever rule**. For…

Answered: The diagram shows two metals, A and B,…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter22: Inorganic Materials

Section: Chapter Questions

Problem 44AP

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Heating MgSO4•7H2O at 150oC produces a different hydrate, MgSO4•XH2O. If heating 24.4 g of pure MgSO4•7H2O at 150oC were to give 19.0505 of pure MgSO4•XH2O, what is the integer value for X?
Zinc may be directly leached from zinc-lead sulphide concentrates by reaction with sulphuricPbS(s) + H2SO4 + 1 O2(g) → PbSO4(solid) + SÂ° + H2O 21ZnS(s) + H2SO4 + 2 O2(g) → ZnSO4(aq) + SÂ° + H2Oacid and oxygen. In addition, lead sulphide will be oxidized to give insoluble lead sulphate:Assume that a plant is to treat 400 t/day of concentrate containing 20.0 weight % Zn as ZnS and 110.0 weight % Pb and PbS. The concentrate and leach solution enters the leaching vessel at 32.0% solids. During the leach, 85.0% of the zinc is extracted and all the lead sulphide is oxidized. After the leaching step, the slurry passes to a thickener.(a) Calculate the concentration of Zn (in g/L) in the solution passing to metal recovery. Assume a solution density of 1.11 g/mL.(b) Calculate the tonnes per day of elemental sulphur produced.NOTE: â€œ% solidsâ€ is the solids content of a slurry (consisting of particles and solution) and is defined as…
The Ostwald process for the commercial production of nitric acid fromammonia and oxygen involvesthe following steps:4NH3 (g) + 5O2 → 4NO (g) + 6H2O (g)2NO (g) + O2 (g) → 2NO2(g)3NO2 (g) + H2O(l) → 2HNO3 (aq) + NO (g)a.Use the values of ΔH° ( in Appendix 4 to calculate the value of ΔH° for each of the preceding reactions.b. Write the overall equation for the production of nitric acid by theOstwald process by combining the preceding equations. (Water is also a product.) Is the overall reaction exotihermic or endothermic?
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State the difference between concrete and Portland cement.(a) There are no differences, in concrete the chemical composition is silicates and in cement aluminates.(b) The chemical composition of concrete is based on silicates and in cement aluminates.(c) Concrete is composed of aggregates bound by cement and cement "only" contains different minerals.(d) Cement is aggregates bound by concrete.
An impure sample of Na3PO3 weighing 0.1392 g was dissolved in 25 mL of water. A solution containing 50 mL of 3% w/v mercury(II) chloride, 20 mL of 10% w/v sodium acetate, and 5 mL of glacial acetic acid was then prepared. The solution containing the phosphite was added dropwise to the second solution, oxidizing PO3^3– to PO4^3– and precipitating Hg2Cl2. After digesting, filtering, and rinsing, the precipitated Hg2Cl2 was found to weigh 0.4320 g. Report the purity of the original sample as %w/w Na3PO3. Moles Na3PO3 = moles Hg2Cl2
(g) Differentiate between hypereutectoid and hypoeutectoid alloys
To further investigate the reactivity of silver, the student submerges a piece of metallic scandium, Sc (s), in a solution of AgNO3 (aq) and observes that the following reaction occurs. Sc(s) + 3 AGNO3 (ag) →3 Ag(s) + Sc(NO3); (aq) (k) Write the balanced net-ionic equation for the reaction. B IU x² X, 3 Ĉ Ω 0/10000 Word Limit
Select the property that is a characteristic of the group 14 (4A) element silicon. O It has a metallic allotrope and diamond-like allotrope, the latter of which predominates below 18 °C. It forms extended compounds with alternating oxygen-silicon single bonds that are prevalent in the Earth's crust. It forms extremely strong Si-Si bonds and can form long-chain silicon-hydrogen compounds called silanes. O Its most stable oxidation state is +2.
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What mass of silver oxide, ag2o, is required to produce 25.0 g of silver sulfadiazine, agc10h9n4so2, from the reaction of silver oxide and sulfadiazine?2C10H10N4SO2 + Ag2O ==> 2AgC10H9N4SO2 + H2O
R = 8.314 mol·K F = 96,485 mol AG° + RT · In(Q) AE° () · In(Q) AG ΔΕ %3D Half Reaction (Note: All given as reduction) E° (V) 02 (g) + 4 H*(aq) + 4 e → 2 H20 (I0) 1.229 Z2 (s) + 2 e - → 2Z (aq) 0.426 (aq) + 3 e A (s) 0.292 2 H20 (1) + 2 e G2+ (aq) + 2 e M2+ (aq) + 2 e Н2 (в) + 2 ОН" (aq) - 0.828 G (s) - 1.245 M (s) - 1.893 Using a U-tube, a student sets up a non-spontaneous electrochemical cell with a battery connected to two carbon electrodes that are submerged in 1 M MZ2 (aq) solution (M is a metal and Z is an anion composed of the newly discovered element Z). Use the reference information given in the table above to answer the following three questions. Question 10 Oxidation will occur at the while reduction will occur at the Possible answers are "anode" and "cathode".

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