The ceramic materials alumina (Al2O3) and chromium oxide (Cr2O3) form an isomorphic phase diagram. The solubility will be(a) unlimited of one ceramic in the other.(b) very limited depending on the weight % of Al2O3(c) very limited depending on the weight % of Cr2O3(d) partial of one ceramic in the other.
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The ceramic materials alumina (Al2O3) and chromium oxide (Cr2O3) form an isomorphic phase diagram. The solubility will be
(a) unlimited of one ceramic in the other.
(b) very limited depending on the weight % of Al2O3
(c) very limited depending on the weight % of Cr2O3
(d) partial of one ceramic in the other.
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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.The maximum solid solubility of carbon in ferrite occurs at 0.022 wt% C and 727 ° C, the eutectoid composition is 0.76 wt% C, the maximum solid solubility of carbon in austenite occurs at 2.14 wt% C and 1147 ° C, and the cementite composition is 6.7 wt% C. For 2122 g of a 3.2134 wt% C steel at 726 ° C, what will be the mass of carbon present as part of a compound?(a) 67.9 g(b) 74.2 g(c) 58.7 g(d) 83.5 g33
- (g) Differentiate between hypereutectoid and hypoeutectoid alloysMagnesium hydride possesses a rutile lattice. (a) Sketch a unit cell of rutile. (b) What are the coordination numbers and geometries of the Mg and H centres in this structure?(a) Interpret the variation, including the overall trend across the 3d series, of the following values of hydration enthalpies (in kJ mol·'). [Ca(H2O)«]²*: -2468; [Ti(H2O)«J*: -2700; [V(H2O)«]**: -2814; [Mn(H2O)6]**: -2743; [Fe(H2O)«]²+: -2843; [Co(H20)6]**: -2904; [Ni(H2O)c]*: -2986. (b) By making use of LFSE (Ligand field stabilization energy) in tetrahedral and octahedral geometries, predict whether hausmannite mineral (Mn3O4) has a normal spinel or inverse spinel structure. Describe the structure of the mineral in detail.
- 4. Limestone containing 87% CaCO3, 6% MgCO3, 3% hematite, 2% silica and remaining water is calcined in hot water to vaporize the water and separate CO2 from the carbonates. The CaO and MgO created by the reaction leave in the solid calcine, along with hematite and silica. How many kilograms of calcine will be produced per ton of limestone?Metal cations in solution are complexed to H2O molecules and exist as hydrated ions. For example, Ni2+ complexes to form the hydrated ion Ni(H2O)62+. Metal cations are also able to complex to other ligands, such as NH3. An aqueous solution is prepared in which 0.00139 mol Ni(NO3)2 and 0.353 mol NH3 are dissolved in a total volume of 1.00 L.Classify the species present in the resulting solution according to their relative amounts. Kf for Ni(NH3)62+ is equal to 5.5 × 108. Ions in Solution (2 items) (Drag and drop into the appropriate area below) Do not place spaces in your answer. Write the expression for the dissociation constant needed to determine the concentration of Ni(H2O)62+ ions at equilibrium in the solution formed in Part 1. Calculate the concentration of Ni(H2O)62+ ions at equilibrium in the solution formed.Please do not give solution in image format thanku Minerals are grouped by their chemical composition. The major groups or families of mineralsinclude the Silicates, Oxides, Sulfates, Sulfides, Carbonates, Native elements, and the Halides.Match the following chemical formulas from a variety of minerals to the mineral family to which theybelong based on their chemical formula.Fe203PbSCaCO3(Mg,Fe)2SiO4AuCaSO4 H2ONaClOxidesSulfidesCarbonatesSilicatesNative elementsSulfates[Choose ]
- Determine the mass (in grams) of magnesium metal required to produce 40.0 mL of H2with a temperature of 26.9 oC and an atmospheric pressure of 745 mmHg. Be sure to take into account water vapour using equation (3). Equation (3): See ImagePlease don't provide handwritten solution.....Explain why the energetics of dissolution can be different for elements in the same group?