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IB Chemistry Extended Essay Exemplar: How successful is ZnO as a photocatalyst at removing C13H18O2, Ibuprofen from wastewater, with the greatest efficiency, within the range? | RevisionDojo
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To what extent does the thickness of an electrophoretically deposited (EPD) reduced graphene oxide (rGO) coating affect the electrical conductivity of copper (Cu) wire?
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Chemistry
EE
A
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?
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Chemistry
EE
A
Pro
“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?”
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Chemistry
EE
A
Pro
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?
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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?
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Chemistry
EE
B
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?
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Chemistry
EE
B
Pro
Investigating the effect of the chain length, position of the functional group and the calorimeter design on the enthalpy of combustion of alcohols
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Chemistry
EE
C
¿En qué medida afectan diferentes métodos de cocción como el hervido, el salteado y al vapor, y variaciones en el pH al contenido de clorofila en las espinacas, antocianinas en las remolachas y carotenoides en las zanahorias?
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Chemistry
EE
C
Pro
“To what extent do 100.00g of different types of oils (sunflower oil, palm oil, peanut oil, coconut oil, and olive oil) with their saponification values affect the pH, being closest to 7, and rate of curing of soap after 3 weeks of curing during the saponification process, conducted at a constant temperature of 50°C for 30 minutes?
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Chemistry
EE
C
How Does the Temperature and Pressure of Water Used to Brew Ground Coffee Affect the Caffeine Concentration in the Final Product?
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Chemistry
EE
D
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