A given sample of wüstite has the formula Fe0.950O1.00. Calculate the fraction of iron ions present as Fe3+. What fraction of the sites normally occupied by Fe2+ must be vacant in this solid?
Answer to relevant QuestionsUse the relative ionic radii in Fig. 13.8 to predict the structures expected for CsBr and KF. Do these predictions agree with observed structures? The ionic radius of Cs+ is 169 pm. Figure 13.8 A mineral crystallizes in a cubic closest packed array of oxygen ions with aluminum ions in some of the octahedral holes and magnesium ions in some of the tetrahedral holes. Deduce the formula of this mineral, and predict ...In Breckenridge, Colorado, the typical atmospheric pressure is 520 torr. What is the boiling point of water (ΔHvap = 40.7 kJ/ mol) in Breckenridge? What pressure would have to be applied to steam at 350oC to condense the ...How much energy does it take to convert 0.500 kg of ice at 220oC to steam at 250oC? Specific heat capacities: ice, 2.1 J g21 8C21; liquid, 4.2 Jg-1oC-1; steam, 2.0 Jg-1oC-1; ΔHvap = 40.7 kJ/ mol; ΔHfus = 6.01 kJ/mol. The critical point of NH3 is 132oC and 111 atm, and the critical point of N2 is –147oC and 34 atm. Which of these substances cannot be liquefied at room temperature no matter how much pressure is applied? Explain.
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