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Calculate the standard enthalpy change for the phase transition reaction of solid carbon dioxide (dry ice) at -78.5°C to gaseous carbon dioxide at 1 atm and 25°C given that the enthalpy of formation of solid carbon dioxide and gaseous carbon dioxide are -393.5 kJ/mol and -393.5 kJ/mol, respectively.
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Feb 3
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Chemical thermodynamics
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A student needs to calculate the enthalpy change for a chemical reaction given the enthalpies of formation of the reactants and products. The specific problem is: Calculate the enthalpy change for the reaction:CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)Given the following enthalpies of formation:ΔHf(CH4) = -74.8 kJ/molΔHf(CO2) = -393.5 kJ/molΔHf(H2O) = -285.8 kJ/mol
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Jan 22
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Chemical reactions
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43
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What is Spearman's rank correlation coefficient?
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Jan 20
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Psychology
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10
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What is an example of a positive influence at the microsystem level according to ecological systems theory?
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Jan 17
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Psychology
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31
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When might older adults experience 'ego integrity'?
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Jan 17
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Psychology
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54
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What is the Narrative Therapy approach?
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Jan 16
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Psychology
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43
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What is prevention?
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Jan 14
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Psychology
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15
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What is extinction in behaviourism?
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Jan 13
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Psychology
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34
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Which cycle is named after the scientist melvin calvin?
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Jan 8
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Science
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14
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What is the body system that digests food mechanically and chemically and absorbs nutrients?
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Jan 6
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Science
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36
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Through which process do behaviors that improve fitness increase?
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Jan 2
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Science
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29
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What is the name for the male gamete?
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Dec 27, 2024
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Science
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58
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What is the term for an infection caused by a fungal parasite?
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Dec 27, 2024
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Science
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