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Calculate the enthalpy change of reduction for Fe2O3 using the following data:Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g) ΔH°rxn = -26.8 kJ mol^-1Fe2O3(s) + 2Al(s) → Al2O3(s) + 2Fe(l) ΔH°rxn = +824.2 kJ mol^-1Note: The standard enthalpy of formation for CO2(g) is -393.5 kJ mol^-1 and for Al2O3(s) is -1675.7 kJ mol^-1.
asked
Jan 23
in
ThermoChemistry
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76
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A chemistry student needs to determine the concentration of a sulfuric acid solution by titrating 25.0 mL of the acid with 0.1000 M sodium hydroxide. The reaction between the two substances is H2SO4 + 2NaOH → Na2SO4 + 2H2O. If it takes 35.0 mL of the sodium hydroxide solution to fully neutralize the sulfuric acid, what is the concentration of the sulfuric acid solution in moles per liter (M)?
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Jan 22
in
Chemical reactions
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33
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What is a homonym?
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Jan 20
in
Psychology
1
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27
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According to the feature integration theory, how does visual attention operate?
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Jan 20
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Psychology
1
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49
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According to the visual capture effect, what happens when auditory and visual information conflict?
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Jan 20
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Psychology
1
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20
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Who developed the concept of extrapyramidal symptoms?
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Jan 16
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Psychology
1
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49
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Why do people obey authority figures even when it conflicts with their own moral compass?
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Jan 15
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Psychology
1
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24
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How is the social network perspective used in community psychology?
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Jan 15
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Psychology
1
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39
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What is the definition of a schema?
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Jan 14
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Psychology
1
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5
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What is the significance of the term 'facticity' in Heidegger's philosophy?
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Jan 13
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Psychology
1
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55
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Where does mechanical digestion begin?
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Jan 8
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Science
1
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18
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Niche refers to the role a species plays in what?
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Dec 31, 2024
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Science
1
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26
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In which sphere of the atmosphere do the northern and southern lights occur?
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Dec 31, 2024
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Science
1
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35
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What is the name of the portion of a nucleotide lacking phosphate groups?
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Dec 27, 2024
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Science
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