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What is the optimum ratio of p-aminobenzoic acid to ethanol in the preparation of benzocaine with maximum yield?
answered
Feb 22
in
Chemical synthesis
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67
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How can the production process of surfactants be optimized to increase the yield and purity of the final product while minimizing environmental impact and cost?
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Feb 10
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Chemical engineering
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38
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How can a cost-effective and efficient system be designed to extract valuable metals like gold and silver from electronic waste, while minimizing environmental impact and complying with regulatory standards?
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Feb 4
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Chemical engineering
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102
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Determine the standard enthalpy of formation for hydrogen chloride gas using the following data:H2(g) + Cl2(g) → 2HCl(g) ΔH = -184.6 kJ/molH2(g) + 1/2O2(g) → H2O(l) ΔH = -285.8 kJ/mol2HCl(g) + O2(g) → 2ClO(g) + H2O(l) ΔH = -518.2 kJ/mol Note: The standard enthalpy of formation for a compound is the change in enthalpy that occurs when one mole of the compound is formed from its constituent elements, with all substances in their standard state at a given temperature (usually 25°C) and pressure (usually 1 atm).
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Feb 4
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Chemical thermodynamics
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92
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How does the temperature affect the reaction rate of methane and oxygen gas undergoing a gas-phase reaction to form carbon dioxide and water? Use Monte Carlo simulations to determine the energy barriers and activation energies at different temperatures and predict the effect of temperature on the reaction rate.
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Jan 31
in
Computational Chemistry
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86
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What is the balanced equation for the oxidation of ethanol (C2H5OH) to ethanoic acid (CH3COOH) using acidified potassium dichromate (K2Cr2O7)? How many moles of potassium dichromate are required to completely oxidize 25 mL of 0.1 M ethanol?
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Jan 21
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Organic Chemistry
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120
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What is the attentional bias theory of anxiety?
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Jan 20
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Psychology
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101
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Why is the dopamine D2 receptor theory controversial?
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Jan 17
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Psychology
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178
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How can the concept of emotional intelligence enhance positive psychology outcomes?
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Jan 17
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Psychology
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98
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Why is Bandura's theory of social learning important?
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Jan 17
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Psychology
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73
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When does the self-consistency theory suggest self-esteem is important?
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Jan 15
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Psychology
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48
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What are the key components of Erik Erikson's psychosocial theory?
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Jan 13
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Psychology
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58
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What is the purpose of peer review in academic publishing?
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Jan 10
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Psychology
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54
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Which phylum are all vertebrate organisms a member of?
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Jan 8
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Science
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96
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What term means the minimum energy required in order for a collision between molecules to result in a chemical reaction?
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Jan 8
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Science
0
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121
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The orbicularis oris is a circular muscle that moves the lips, and the orbicularis oculi is a circular muscle that does what?
answered
Jan 2
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Science
0
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54
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The capsid is made from the what that are encoded by viral genes within their genome?
answered
Dec 31, 2024
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Science
0
votes
57
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Ripe fruits are usually red, orange, yellow, or what?
answered
Dec 31, 2024
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Science
0
votes
42
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Glaciers have been melting since what period?
answered
Dec 30, 2024
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Science
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50
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Billions of what inside the human digestive tract help us digest food, make vitamins and play other important roles?
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Dec 30, 2024
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Science
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