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Calculate the density of Tungsten(W) with miller indices [1 1 0 ]
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- (4) Find the Fermi energy of lithium EF, the Fermi temperature TF, and the speed of vF of the fastest free electrons.Is it possible to use mesoporous silica nanoparticles (nano carriers)as support of catalysts or bio catalysis for the remediation of pesticides/herbicides applied to soil environment? Thanks4G VOLTE O 76 14 4:58 7 February 2021 4:57 PM (ii) Calculate the lattice energy of Silica oxide (SiO2) from the data given below: Si (g) - Si (s) AH° = -454 kJ mol-1 S1A+ (E) + 4e" Si (3) AH° = -9949 kJ mol-1 20 (g) – 02 (3) AH° = -498 kJ mol-1 02 (3) 0 (g) + 2e AH° = -737 kj mol-1 Si (s) + 02 (3) → SiO2 (s) s14+ (6) - 202- (3) – SiO2 (s) AHf (SIO2)= -910.9 kj mol1 AH°lattice = ? Share Favourite Edit Delete More
- Determine the gravimetric factor of CrO4 in K₂Cr2O7. The atomic weight of chromium is 52g/mol 0.7891 0.3946 0.8791 0.4936 оWhich of the following definitions is correct? H = G – TS A = U – TS G = H + PV U = S – PV1). The susceptibility of FeCl₂ obeys the Curie-Weiss law over the temperature range 90 K to room temperature (293K), with 0 =48K. Its molecular susceptibility at room temperature is 1.475 1022 emu/Oe g mol). (Use: N= 6.022 x 1023 atoms/g-mol, KB= 1.38 × 10-¹6 erg/K) (a) Show that the effective magnetic moment is 5.4 µB. (b) Show that the value of J is 2.25. (c) At an applied field of 8000 Oe, what is the value of the molecular field at 0 °C ?
- Q2: A/ chose from list (B) a suitable answer for list (A) A OFe 1. m 2. Au 3. C12 (O/ to + Oa = 2RV2 %3D 4. covalent 5. allotropy )amuGlass, quartz, and cristobalite have the same chemical formula, SiO2. Given the XRD diffractograms below, what can you say about each of these compounds? Counts SiO2 Glass 4000 - 2000 Quartz 4000 3000 2000 - 1000 Cristobalite 4000 2000 20 30 40 50 Position [2Theta] (Copper (Cu))I want you to finish the chart that I have started below: Type of silicate mineral Anion Formula Do not include OH- Anion Charge (If it is 0 then make sure to add it as such( Example (Mineral) Cyclosilicate Si6O18 -12 Beryl Nesosilicate Ionosilicate (chain) Ionosilicate (double chain) omit OH-. Phyllosilicate Omit OH-. Just Si and O. Tectosilicate Silica group
- Why are units of energy per area (J/m²) used for surface ten-sion values?2al(s) + cr2o3(aq) > al2o3(aq) + 2cr2(s)F. 150 135 120 E 105 90 75 B 60 45 30A 15 Heat (kJ) Created by E. Le for Virtual Virginia (2021) Using this heating curve, complete the following statements: 1) The substance's melting or freezing point can be found between points [ Select] and [Select] (Select the points alphabetically; for example, "X and Y" not "Y and X") 2) Between points ( Select) and [ Select] the substance is in the liquid phase. (Select the points alphabetically; for example, "X and Y" not "Y and X") 3) At 50°C, the substance is a ( Select] Temp. (°C)
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