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How does the pH level of a solution affect the reaction rate between sodium thiosulfate and hydrochloric acid?
asked
Feb 22
in
Chemical kinetics
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1
answer
38
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How does the molecular weight and branching of a polymer affect its suitability for use in 3D printing, and how can these properties be optimized for improved printing quality and mechanical strength of the printed object?
asked
Feb 21
in
Materials Chemistry
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1
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28
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What is the bond energy of a carbon-carbon bond in ethane (C2H6) and what is the energy change when two ethane molecules react to form one butane (C4H10) molecule?
asked
Feb 18
in
Chemical reactions
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1
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29
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How does the addition of titanium affect the mechanical properties of nickel-based superalloys for use in high-temperature aerospace applications?
asked
Feb 17
in
Materials Chemistry
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1
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28
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How can the optical properties of a conjugated polymer be accurately calculated using quantum chemistry methods?
asked
Feb 10
in
Quantum Chemistry
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1
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49
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How can the chemical and physical properties of natural compounds found in plants be utilized for the development of effective treatments for gastrointestinal diseases such as inflammatory bowel disease and gastroesophageal reflux disease?
asked
Feb 6
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Medicinal Chemistry
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38
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How can one predict the stability of inorganic compounds and what factors affect their stability?
asked
Feb 5
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Inorganic Chemistry
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113
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In an experiment, a student identified an unknown organic compound using mass spectrometry analysis. The mass spectrum showed an M+ peak at m/z 86 and a base peak at m/z 43. Using this information, can you determine the molecular formula of the unknown compound?
asked
Jan 30
in
Analytical Chemistry
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68
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Calculate the enthalpy of combustion of methane if 2.56 g of methane was burnt completely in a bomb calorimeter containing excess oxygen, causing a temperature rise of 4.58 °C in the calorimeter, which has a heat capacity of 1.26 kJ/°C. The balanced chemical equation for the combustion of methane is as follows: CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + energy.
asked
Jan 23
in
ThermoChemistry
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57
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Calculate the enthalpy of adsorption of hydrogen gas on activated carbon if 2 grams of activated carbon absorb 0.025 moles of hydrogen gas at 298 K and the pressure of the system is 1 atm. The molar enthalpy of hydrogen gas is -285.8 kJ/mol at constant pressure.
asked
Jan 23
in
ThermoChemistry
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33
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A chemistry student needs to determine the pH of an unknown solution using a pH meter. The student is given the following equipment: pH meter, reference electrode, and a container for the solution. The student should describe the steps needed to measure the pH of the solution and explain the significance of the obtained pH value.
asked
Jan 22
in
Analytical Chemistry
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67
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What is the oxidation state of manganese in KMnO4?
asked
Jan 21
in
Inorganic Chemistry
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110
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According to social cognitive theory, how can vicarious reinforcement affect behaviour?
asked
Jan 20
in
Psychology
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1
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81
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What was the aim of Zimbardo's prison experiment?
asked
Jan 20
in
Psychology
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1
answer
93
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What is the difference between power and effect size?
asked
Jan 20
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Psychology
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1
answer
54
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How might temperament influence children's adjustment to new environments?
asked
Jan 17
in
Psychology
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1
answer
72
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According to Noam Chomsky, how do children acquire language?
asked
Jan 17
in
Psychology
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1
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71
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What is the difference between a micro and macro approach in discursive psychology?
asked
Jan 16
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Psychology
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1
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66
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According to the information processing theory, how do we process information?
asked
Jan 16
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Psychology
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1
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44
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What is structured observation?
asked
Jan 15
in
Psychology
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