Questions by JuanitaShear

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1 answer 24 views

What is the mechanism of polymerization involved in the formation of polyethylene? Provide a detailed explanation of the process, including the reaction equation and the role of the catalyst.

asked Feb 20 in Organic Chemistry

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1 answer 33 views

How does the concentration of a catalyst affect the reaction rate of the decomposition of hydrogen peroxide?

asked Feb 18 in Chemical kinetics

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1 answer 34 views

What is the mechanism of action for sunscreen agents and how do they protect the skin from UV radiation?

asked Feb 14 in PhotoChemistry

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1 answer 38 views

How can the electrolyte characteristics of polymer batteries be manipulated to improve battery performance and efficiency?

asked Feb 7 in Polymer Chemistry

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1 answer 27 views

Consider the reaction:$$\mathrm{N_2(g) + 3H_2(g) <=> 2NH_3(g)}$$At a certain temperature, the equilibrium constant $K_c$ for this reaction is $5.6 \times 10^{-5}$. If a reaction vessel initially contains only $\mathrm{0.10\,mol}$ of $\mathrm{N_2}$ and $\mathrm{0.20\,mol}$ of $\mathrm{H_2}$, what will be the equilibrium concentrations of $\mathrm{N_2}$, $\mathrm{H_2}$, and $\mathrm{NH_3}$ once the reaction reaches equilibrium?

asked Feb 3 in Chemical reactions

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1 answer 77 views

Calculate the standard free energy change for the following redox reaction:2HgO(s) → 2Hg(l) + O2(g)Given: ΔG°f (HgO) = -90.83 kJ/molΔG°f (Hg) = 0 kJ/mol ΔG°f (O2) = 0 kJ/mol.

asked Feb 3 in Chemical thermodynamics

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1 answer 91 views

What are the key structural and chemical properties that differentiate biomaterials used in tissue engineering applications from those used in other types of medical devices, and how do these properties affect their performance in vivo?

asked Jan 31 in Materials Chemistry

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1 answer 127 views

Identify whether the following solids are ionic, covalent, or metallic: (i) NaCl, (ii) CO2, (iii) Fe, (iv) SiO2, (v) Ag. Justify your answer with proper reasoning for each compound.

asked Jan 30 in Inorganic Chemistry

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1 answer 93 views

What is the concentration of copper ions in a sample of water collected from a river using voltammetry?

asked Jan 30 in Analytical Chemistry

0 votes

1 answer 68 views

How can we accurately determine the concentration of iron in a water sample using colorimetry, and what is the potential impact on human health if the concentration exceeds a certain threshold?

asked Jan 29 in Analytical Chemistry

+1 vote

1 answer 83 views

What is the oxidation state of sulfur in the compound SOCl2?

asked Jan 21 in Inorganic Chemistry

0 votes

1 answer 89 views

When was the first Diagnostic and Statistical Manual of Mental Disorders DSM released?

asked Jan 20 in Psychology

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1 answer 110 views

According to Social Identity Theory, how does a leader's identity influence perceptions of their effectiveness?

asked Jan 20 in Psychology

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1 answer 72 views

According to the framing effect, what influences how people perceive information?

asked Jan 17 in Psychology

0 votes

1 answer 72 views

How can a growth mindset be beneficial in positive psychology?

asked Jan 17 in Psychology

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1 answer 50 views

When is the use of mood stabilisers not recommended in the treatment of bipolar disorder?

asked Jan 16 in Psychology

0 votes

1 answer 39 views

According to the sociocultural model, what is the cause of schizophrenia?

asked Jan 16 in Psychology

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1 answer 53 views

What determines whether a one-tailed and a two-tailed test is used?

asked Jan 16 in Psychology

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1 answer 44 views

What is the main criticism of the trait theory?

asked Jan 16 in Psychology

0 votes

1 answer 14 views

What is the significance of the interpersonal circumplex?

asked Jan 15 in Psychology

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