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“How do varying concentrations of eggshell powder adsorbent (1.00, 2.00, 3.00, 4.00, 5.00 grams) alongside the adsorption duration (5, 10, 15, 20, 25, 30 minutes) affect its efficacy on the concentration of manganese(VII) ions in wastewater?”
Chemistry
EE
A
Pro
How does the accuracy of Redox Potential compare to Spectrophotometry for measuring concentration of copper ions in solution?
Chemistry
EE
B
Pro
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
C
Pro
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
C
HL
Pro
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
B
Pro
How does the duration of 800W microwave exposure affect the rate of acetaminophen hydrolysis in the presence of acidified iron(III) chloride (FeCl3)(aq), measured by quantifying the iron(III)+p-aminophenol complex ion in alkaline conditions?
Chemistry
EE
B
Pro
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
C
Pro
To what extent do temperature, the availability of light, and the availability of oxygen relatively affect the rate of vitamin C degradation in 20 ml sample solutions prepared from vitamin C tablets during 2 weeks of storage?
Chemistry
EE
A
Pro
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
C
Pro
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
B
Pro