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What is the enthalpy change (in kJ/mol) for the combustion of propane (C3H8) using Hess's Law? Use the following information: C3H8 + 5O2 → 3CO2 + 4H2O ∆H = −2043 kJ/mol 2CO + O2 → 2CO2 ∆H = −566 kJ/mol H2 + 1/2O2 → H2O ∆H = −285.8 kJ/mol
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Feb 20
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ThermoChemistry
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84
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How does the surface modification of polymers affect their hydrophobicity and adhesion properties?
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Feb 17
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Surface Chemistry
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78
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What is the impact of supramolecular assemblies on the photochemical properties of organic molecules?
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Feb 17
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PhotoChemistry
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75
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How can we predict the solubility of inorganic salts in water based on their chemical properties such as ionic charge, size, and polarizability?
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Feb 14
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Inorganic Chemistry
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86
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How can the yield of carbon nanotube synthesis be optimized using different methods and conditions?
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Feb 14
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Materials Chemistry
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86
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How can a distillation column be designed to effectively separate a binary mixture of ethanol and water with a specific composition, using commonly available materials and maximizing efficiency while minimizing heat loss?
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Feb 4
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Chemical engineering
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124
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What are the top three most commonly missed topics on a high school chemistry exam and how can a student adequately prepare for these topics?
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Jan 30
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Chemical education
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56
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How can the analysis of X-ray fluorescence spectra be used to identify the chemical composition and concentration of elements in a given sample, and what factors influence the accuracy and precision of this technique?
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Jan 29
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Analytical Chemistry
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80
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Based on the intermolecular forces present in a substance, predict which substance would have a higher boiling point: methane or ethane?
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Jan 23
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Chemical bonding
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147
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What is the difference between CBT and rational emotive behaviour therapy REBT ?
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Jan 16
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Psychology
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97
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What is the sexual script theory?
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Jan 15
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Psychology
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1
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100
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What is the difference between positive and negative priming?
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Jan 14
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Psychology
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1
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55
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What is the post-conventional stage of moral development?
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Jan 14
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Psychology
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60
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What is servant leadership?
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Jan 14
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Psychology
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58
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How do cognitive theories explain the relationship between our thinking patterns and our emotional experiences?
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Jan 13
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Psychology
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57
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Which type of pressure forces fluid out of the capillary?
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Jan 8
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Science
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107
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Where is the most significant connection between the cerebellum and the rest of the brain?
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Jan 8
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Science
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1
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58
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What is the last step in a scientific investigation?
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Jan 7
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Science
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1
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126
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What is formed when hot lava cools?
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Jan 6
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Science
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71
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What are non-renewable sources of energy that produce environmental damage?
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Jan 3
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Science
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