Questions by MireyaReynol

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1 answer 41 views

Calculate the standard enthalpy change (∆H°) for the reaction: NaOH(aq) + HCl(aq) -> NaCl(aq) + H2O(l) given the following information: - The enthalpy change of neutralization of HCl(aq) with NaOH(aq) is -55.9 kJ/mol. - The enthalpy of formation of NaCl(s) is -411.2 kJ/mol.- The enthalpy of vaporization of water (H2O) is 40.7 kJ/mol.Assume that the specific heat capacity of the water is 4.18 J/g K and the density of the solution is 1 g/mL.

asked 2 days ago in Chemical thermodynamics

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1 answer 70 views

What is the most effective and eco-friendly method to remediate a site contaminated with heavy metals such as mercury, lead, and cadmium? Conduct a literature review and compare the efficiency, feasibility, and sustainability of different remediation techniques such as phytoremediation, bioremediation, chemical immobilization, and electrokinetic remediation. Additionally, evaluate the long-term effects of each method on the environment and human health.

asked 5 days ago in Environmental Chemistry

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1 answer 57 views

How can electrophoresis be used to determine the purity of a protein sample? What factors affect protein migration during electrophoresis and how can they be manipulated to optimize separation of proteins in the sample? What are the limitations and advantages of using electrophoresis compared to other analytical techniques for protein analysis?

asked Jan 29 in Analytical Chemistry

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1 answer 20 views

When might the concept of 'flow' be useful?

asked Jan 20 in Psychology

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1 answer 32 views

According to the cognitive behavioural approach, how might cognitive distortions affect mental health?

asked Jan 16 in Psychology

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1 answer 24 views

What is the behavioural approach to leadership?

asked Jan 16 in Psychology

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1 answer 24 views

What is the gender schema theory?

asked Jan 15 in Psychology

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1 answer 47 views

How does the social learning theory of aggression help us understand aggression?

asked Jan 15 in Psychology

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1 answer 14 views

Which type of bryophytes are named for their horn-like sporophytes?

asked Jan 8 in Science

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1 answer 29 views

Rna is especially important during synthesis of what?

asked Dec 31, 2024 in Science

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1 answer 9 views

Medical problems associated with the body responding poorly to insulin are commonly associated with what disease?

asked Dec 31, 2024 in Science

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1 answer 9 views

Potassium, calcium, and magnesium are considered what kind of nutrients?

asked Dec 27, 2024 in Science

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1 answer 8 views

When the smooth muscle relaxes, the arterioles dilate, allowing blood to enter the what?

asked Dec 27, 2024 in Science

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