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Investigating The Content of Tannin in Tea Affected by Steeping Time Using a Colorimeter - Chemistry IA exemplar scored 3

Investigating The Content of Tannin in Tea Affected by Steeping Time Using a Colorimeter

How does temperature (5.0ºC, 10.0ºC, 15.0ºC, 20.0ºC, 25.0ºC, 30.0ºC, 35.0ºC, 40.0ºC) affect the concentration of dissolved oxygen (mg/dm3) in 20.00cm3 of deionised water, measured using Winkler's titration method? - Chemistry IA exemplar scored 7

How does temperature (5.0ºC, 10.0ºC, 15.0ºC, 20.0ºC, 25.0ºC, 30.0ºC, 35.0ºC, 40.0ºC) affect the concentration of dissolved oxygen (mg/dm3) in 20.00cm3 of deionised water, measured using Winkler's titration method?

How do solutions with a different pH (4, 6, 7, 8, 10) affect the amount of calcium carbonate (in moles) remineralised when left in a fluoride toothpaste solution, as measured by changes in the absorbance value using a colourimeter set to 430nm? - Chemistry IA exemplar scored 5

How do solutions with a different pH (4, 6, 7, 8, 10) affect the amount of calcium carbonate (in moles) remineralised when left in a fluoride toothpaste solution, as measured by changes in the absorbance value using a colourimeter set to 430nm?

What is the effect of aqueous NaCl concentration increase (0.5%, 1%, 3.5%, 5%, 10%) on the mass loss of iron? - Chemistry IA exemplar scored 5

What is the effect of aqueous NaCl concentration increase (0.5%, 1%, 3.5%, 5%, 10%) on the mass loss of iron?

Investigating how increasing temperatures of water (40°C, 50°C, 60°C, 70°C, 80°C, 90°C, 100°C) in which cloves are steeped affect the concentration of quercetin, measured by a spectrophotometer - Chemistry IA exemplar scored 5

Investigating how increasing temperatures of water (40°C, 50°C, 60°C, 70°C, 80°C, 90°C, 100°C) in which cloves are steeped affect the concentration of quercetin, measured by a spectrophotometer

How does the boiling time (0.00, 240.00, 480.00, 720.00, 960.00, 1200.00 seconds) affect the amount of ionic calcium
(in mg) in cow’s milk determined using Ethylenediaminetetraacetic acid (EDTA) complexometric back titration
using Eriochrome Black T indicator? - Chemistry IA exemplar scored 7

How does the boiling time (0.00, 240.00, 480.00, 720.00, 960.00, 1200.00 seconds) affect the amount of ionic calcium (in mg) in cow’s milk determined using Ethylenediaminetetraacetic acid (EDTA) complexometric back titration using Eriochrome Black T indicator?

Investigating the Effect of Ionic Charge of Cation towards the Enthalpy of Solution of Salts - Chemistry IA exemplar scored 5

Investigating the Effect of Ionic Charge of Cation towards the Enthalpy of Solution of Salts

Examining the effect of temperature on the rate of reaction and determining activation energy using the Arrhenius Plot. - Chemistry IA exemplar scored 4

Examining the effect of temperature on the rate of reaction and determining activation energy using the Arrhenius Plot.

"How does the temperature change (20°C, 40°C, 60°C, 80°C and 100°C) affect calcium concentration (mg) in soya milk, measured by using Ethylenediaminetetraacetic acid (EDTA) Complexometric titration?” - Chemistry IA exemplar scored 6

"How does the temperature change (20°C, 40°C, 60°C, 80°C and 100°C) affect calcium concentration (mg) in soya milk, measured by using Ethylenediaminetetraacetic acid (EDTA) Complexometric titration?”

As determined by the reaction rate constant, which catalyst from baker’s yeast, baking powder, and manganese (IV) oxide is the most effective at catalyzing the decomposition of 3% hydrogen peroxide? - Chemistry IA exemplar scored 7

As determined by the reaction rate constant, which catalyst from baker’s yeast, baking powder, and manganese (IV) oxide is the most effective at catalyzing the decomposition of 3% hydrogen peroxide?