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What is the most effective remediation technology to remove heavy metal contaminants (e.g. lead, chromium or arsenic) from soil and groundwater in a contaminated site, and how can this method be optimized for maximum efficiency and sustainability?

asked Feb 21 in Environmental Chemistry by ArnoldJanous (2.1k points)

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What is the optimum reaction time and temperature for the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol, and how do these parameters affect the yield and molecular weight of the resulting polymer?

asked Feb 22 in Chemical synthesis by KarolinBalse (1.5k points)

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How does pH affect the stability of colloidal particles and their tendency to coagulate?

asked Feb 22 in Surface Chemistry by GavinMott60 (1.8k points)

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What is the oxidation state of iron in Fe2O3?

asked Feb 22 in Chemical reactions by MAQShelton1 (1.7k points)

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What is the resonance structure of the phenoxide ion, and how does this resonance stabilize the ion?

asked Feb 22 in Organic Chemistry by DelorasGaise (1.9k points)

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What is the oxidation product of an aldehyde and a ketone, and how can it be identified using a specific chemical test?

asked Feb 22 in Organic Chemistry by Eusebia94K98 (2.2k points)

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What is the optimal ratio of diisocyanate to polyol for the synthesis of polyurethane with optimal mechanical properties?

asked Feb 21 in Chemical synthesis by RoderickKyle (2.4k points)

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What is the optimal ratio of diisocyanate to polyol for the synthesis of polyurethane with desired mechanical properties and how does this ratio affect the final characteristics of the material?

asked Feb 21 in Chemical synthesis by GrettaKavel6 (2.2k points)

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How do the photochemical properties of gold nanoparticles differ from those of silver nanoparticles, and how can these differences be explained using the principles of photochemistry?

asked Feb 22 in PhotoChemistry by MonikaQuirk7 (2.0k points)

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What is the effect of pH on the stability of a colloidal solution and how can this be demonstrated experimentally?

asked Feb 22 in Surface Chemistry by ZakOleary170 (1.8k points)

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What is the net yield of ATP molecules produced in one cycle of the citric acid cycle and oxidative phosphorylation? Show the detailed steps of how the ATP molecules are generated from the electron transport chain.

asked Feb 21 in BioChemistry by PaulineUym83 (2.3k points)

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What is the most efficient method for synthesizing 2,4,6-trinitrotoluene from toluene and nitric acid with high yield and purity, while minimizing any potential environmental hazards?

asked Feb 21 in Chemical synthesis by VeolaBenjafi (2.2k points)

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How does the photochemical behavior of enantiomers differ and what are the implications for their industrial and biological applications?

asked Feb 22 in PhotoChemistry by DenishaChiod (1.1k points)

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What is the optimal ratio of aniline to nitric acid to obtain the maximum yield of p-nitroaniline during the preparation process?

asked Feb 21 in Chemical synthesis by JerroldCleve (2.0k points)

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What is the net number of ATP molecules produced per glucose molecule oxidized in the citric acid cycle and oxidative phosphorylation?

asked Feb 21 in BioChemistry by DevonHamlett (2.3k points)

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How does the photochemical behavior of enantiomers differ, and what factors contribute to these differences?

asked Feb 22 in PhotoChemistry by ElenaBriscoe (2.1k points)

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How does the pH of a solution affect the rate of a specific photochemical reaction?

asked Feb 22 in PhotoChemistry by KatherinaI21 (1.8k points)

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1 answer 88 views

What is the effect of the molecular weight of a polymer on the properties of the resulting coating or paint?

asked Feb 21 in Polymer Chemistry by DanielleVanw (2.3k points)

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What is the bond angle of the molecule SF6, and how does the molecule's shape relate to its bond angle?

asked Feb 21 in Chemical bonding by MckenzieWxs (1.6k points)

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What is the most effective method to dispose of low-level radioactive waste without causing harm to the environment, and how can we monitor the potential impact of such waste on soil, water, and nearby ecosystems?

asked Feb 21 in Environmental Chemistry by ScarlettRobb (1.7k points)

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