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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
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
B
¿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?
Chemistry
EE
C
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?
Chemistry
EE
B
Pro
To what extent does the unsaturation level of fats in Hokubee Meltique Meat, affect the cardiovascular health of an average adult?
Chemistry
EE
C
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 changing the time in 5 minute intervals (0, 5, 10, 15, 20, 25 minutes) for which 3 grams of Phaseolus vulgaris (Lightly speckled kidney beans) are simmered affect its iron content in milligrams as determined by spectrophotometric methods using a wavelength of 477.1 nm?
Chemistry
EE
C
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?”
Chemistry
EE
A
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 Temperature and Pressure of Water Used to Brew Ground Coffee Affect the Caffeine Concentration in the Final Product?
Chemistry
EE
D