Questions by ShondaEzell4

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1 answer 34 views

How can the mechanical and thermal properties of polymer-based composites be optimized for use in aerospace applications, and what are the most promising types of reinforcement materials and processing techniques for achieving these goals?

asked Feb 7 in Polymer Chemistry

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1 answer 39 views

Calculate the standard enthalpy change (ΔH°) and standard entropy change (ΔS°) for the decomposition reaction of calcium carbonate (CaCO3) at 298 K:CaCO3(s) → CaO(s) + CO2(g)

asked Feb 3 in Inorganic Chemistry

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1 answer 53 views

What is the effect of adding a catalyst on the equilibrium position of a redox reaction and how would you calculate the change in equilibrium concentration of products and reactants? Provide an example of a redox reaction and its equilibrium constant (Kc) value before and after the addition of a catalyst. Also, explain the role of a catalyst in shifting the equilibrium position of a reaction.

asked Jan 30 in Chemical equilibrium

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1 answer 56 views

A student wishes to prepare a buffer solution by adding 0.20 moles of acetic acid (Ka = 1.8 x 10^-5) and 0.20 moles of sodium acetate in 1 liter of solution. The student adds 0.05 moles of hydrochloric acid (HCl) to the solution. Calculate the effect of adding the buffer on the equilibrium position of the acid-base reaction and determine the new pH of the solution.

asked Jan 22 in Chemical equilibrium

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1 answer 35 views

What is the definition of anxiety?

asked Jan 14 in Psychology

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1 answer 34 views

What carries the instructions from the nucleus to the cytoplasm?

asked Jan 6 in Science

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