quantify the concentration of the Bovine Serum Albumin (BSA) then constructing a standard curve graph and to use the spectrophotometer to perform an enzyme assay using different concentration of the BSA. Experiment 5 also verifies the Beer-Lambert Law‚ which is the linear relationship between absorbance and concentration of an absorbing species. Absorbance formula is shown in fig. 1.1. However‚ the Beer-Lambert Law is not obeyed at high concentration as solution with high concentration may alter the
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Claim: The construction industry would crumble without rocks. Rationale: Marble is a renewable resource‚ which means it doesn’t run out‚ that’s one of the reasons of why it is used a lot. it is used in buildings for mostly interior uses‚ but sometimes also exterior uses. It is also used in sculptures. Marble flooring is very popular around the construction industry‚ this is because marble conveys a good visual appearance and has good durability. Though‚ like every material it should be take care
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The rate of reaction between sodium thiosulphate and hydrochloric acid Candidate name: Yeo Jin Kim (Kimberly Kim) Candidate number: 000791-021 Teacher: Yitao Duan 1.0 Aim The aim of this experiment is to investigate the changing of concentration effect the rate of reaction between sodium thiosulphate and hydrochloride. 2.1 Chemical Equation 2.0 Raw data 3.2 Qualitative Data 2.1.1 Before the experiment Substance | Color | State | Smell | Hydrochloride (HCl) | Colorless
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Factors Affecting the Rate of the Reaction between Calcium Carbonate and Hydrochloric Acid A chemical reaction is the process by which atoms or groups of atoms are redistributed‚ resulting in a change in the molecular composition of substances. The reaction rate is how quickly a reaction occurs and this can be affected by four different factors: ¡¤ changing the surface area of any solids involved ¡¤ changing the concentration of reactants in solution ¡¤ changing the temperature at which it is carried
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various metals by observing their reaction with hydrochloric acid. Materials: 2 M hydrochloric acid Detergent Test tubes and test tube rack 0.5 pieces of magnesium‚ aluminium‚ iron‚ zinc and cooper Sand paper Ruler Timer Bench mat Method: 1. The surface of the magnesium was cleaned with a piece of sandpaper 2. The Magnesium was placed into a test tube 3. Three Drops of detergent were added to the test tube 4. 2cm of hydrochloric acid was added to the test tube 5. The timer was set
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a solution of potassium hydroxide using standard hydrochloric acid Theory . Introduction: Titration is a procedure used in chemistry in order to determines the molarity of an acid or a base. In the other words‚ it is also consider as acid-base neutralization reaction (Darrell D. Ebbing 1976). A chemical reaction is set up between a know volume of a solution of unknown concentration and a known volume of a solution with a known concentration. The relative acidity or basicity of an aqueous
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concentrain of sulphuric acid Aim The point of this investigation is to find out the concentration of the sulphuric acid in my experiment. I will do this by titrating the sulphuric acid with sodium carbonate. H2SO4 + Na2CO3 à Na2SO4 + H2O + CO2 Acid + Alkali à Salt + Water + Carbon dioxide Ratio of sulphuric acid to sodium carbonate: H2SO4 : Na2CO3 1 : 1 Concentration of sulphuric acid: H2SO4 is approximately 0.05 - 0.15 moldm-3 The average concentration of the sulphuric acid is: 0.05 + 0.15 =
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investigation in to the rate of reaction Plan: I am going to investigate the rate of reaction. The reaction I will be using is: Calcium Carbonate + Hydrochloric acid ---- Calcium Chloride + water + carbon dioxide. CaCO3 + 2HCl ---- CaCl +H2O + CO2 Measurements and Variables: The variables I have chosen to change is strength of the hydrochloric acid which will be 1 mole‚ 0.7 mole‚ 0.5 mole‚ 0.3 mole and 0.1 mole some variable I will not be using are temperature‚ mass‚ density. The measurements
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reaction was the reaction from the sulfate anion test between Sodium Sulfate and Barium Chloride. If the compound was in fact Sodium Sulfate it would produce a white precipitate and it did. The second reaction was first between Sodium Sulfate and Hydrochloric Acid‚ and then Silver Nitrate was added. For the compound to be confirmed‚ a white precipitate should form again‚ and it did. The next reaction started with the combination of Sodium Sulfate and Ammonia Hydroxide and
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Finding the Activation Energy of the reaction between Hydrochloric Acid and Sodium Thiosulfate The equation for the reaction is: S2O32- (aq) + 2H+(aq) ⋄ SO2 (g) + S(s) + H2O (l) Equipment - 2 boiling tubes - 400 cm3 beakers - Marker pen - Stand and clamp - Timer - Bunsen burner‚ tripod and gauze - 0 – 100 oC thermometer - 2 x 10 cm3 measuring cylinders - Access to a fume cupboard. Method 1. Label two boiling tubes A and B. Mark a dark spot on the side of a 400cm3 beaker‚ then ½ fill
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