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How does pH (3, 5, 7, 9, 11) affect the equilibrium adsorption capacity of 10 ppm methylene blue onto 0.5g of granular activated carbon, and which kinetic model, pseudo-first-order or pseudo-second-order, best describes this process? - Chemistry EE exemplar scored B

How does pH (3, 5, 7, 9, 11) affect the equilibrium adsorption capacity of 10 ppm methylene blue onto 0.5g of granular activated carbon, and which kinetic model, pseudo-first-order or pseudo-second-order, best describes this process?

n What Ways does Brewing Time Variation (1 Minute
Variation) Affect the Physical, Chemical, and Antioxidant Properties of Teas (1.00 gram), Considering Changes in Gallic Acid Concentration, pH, and Colour? - Chemistry EE exemplar scored C

n What Ways does Brewing Time Variation (1 Minute Variation) Affect the Physical, Chemical, and Antioxidant Properties of Teas (1.00 gram), Considering Changes in Gallic Acid Concentration, pH, and Colour?

To what extent can various analytical methods, such as Spectrophotometry, Gravimetry, and Iodometric Titration, accurately measure copper content in brass alloys, and what are the implications of their respective strengths and limitations on the accuracy and precision of the obtained results? - Chemistry EE exemplar scored C

To what extent can various analytical methods, such as Spectrophotometry, Gravimetry, and Iodometric Titration, accurately measure copper content in brass alloys, and what are the implications of their respective strengths and limitations on the accuracy and precision of the obtained results?

How does 125ml solution of hydrochloric acid in varying concentrations (10%, 20%, 40%, 60%, 80%, 100%) affect the corrosion rate of different iron based alloy screws after 2 hours of submersion? - Chemistry EE exemplar scored B

How does 125ml solution of hydrochloric acid in varying concentrations (10%, 20%, 40%, 60%, 80%, 100%) affect the corrosion rate of different iron based alloy screws after 2 hours of submersion?

How does the magnitude of ionic radii of cations, specifically Sodium (Na+), Magnesium (Mg2+), Calcium (Ca2+), and Potassium (K+), in chloride salts, affect the corrosion rate on an iron nail as measured through immersion tests and spectrophotometry over 6 days? - Chemistry EE exemplar scored B

How does the magnitude of ionic radii of cations, specifically Sodium (Na+), Magnesium (Mg2+), Calcium (Ca2+), and Potassium (K+), in chloride salts, affect the corrosion rate on an iron nail as measured through immersion tests and spectrophotometry over 6 days?

To what extent does the concentration of ethanol (0-50%) affect the rate of hydrolysis of aspirin, as determined via visible spectrophotometry. Furthermore, investigate the effect of molecular structure in terms of the number and position of hydroxyl groups of 3 carbon chain alcohols (propan-1-ol, propan-2ol, propylene glycol and glycerol) at 50% concentration on the above. - Chemistry EE exemplar scored C

To what extent does the concentration of ethanol (0-50%) affect the rate of hydrolysis of aspirin, as determined via visible spectrophotometry. Furthermore, investigate the effect of molecular structure in terms of the number and position of hydroxyl groups of 3 carbon chain alcohols (propan-1-ol, propan-2ol, propylene glycol and glycerol) at 50% concentration on the above.

How does the polarity of the different solvents (hexane, dichloromethane, chloroform, diethyl ether, ethanol, ethyl acetate, acetone) affect the amount of extracted caffeine? A determination by iodometric titration. - Chemistry EE exemplar scored C

How does the polarity of the different solvents (hexane, dichloromethane, chloroform, diethyl ether, ethanol, ethyl acetate, acetone) affect the amount of extracted caffeine? A determination by iodometric titration.

How Does the Temperature and Pressure of Water Used to Brew Ground Coffee Affect the Caffeine Concentration in the Final Product? - Chemistry EE exemplar scored D

How Does the Temperature and Pressure of Water Used to Brew Ground Coffee Affect the Caffeine Concentration in the Final Product?

How does the transmission of UV light through coloured light filters affect the concentration of linalool during the storage of extracted Basil oil, dissolved in ethanol, as measured by Gas Chromatography Mass Spectrometry? - Chemistry EE exemplar scored B

How does the transmission of UV light through coloured light filters affect the concentration of linalool during the storage of extracted Basil oil, dissolved in ethanol, as measured by Gas Chromatography Mass Spectrometry?

How does the bioethanol yield (ml) from the fermentation of 1.5kg of corn, potato, and sugarcane differ under controlled conditions, and what factors influence the efficiency of production? - Chemistry EE exemplar scored B

How does the bioethanol yield (ml) from the fermentation of 1.5kg of corn, potato, and sugarcane differ under controlled conditions, and what factors influence the efficiency of production?