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What is the advantages of using biuret reaction in place of measuring the absorption of the protein solution at 280 nm?
The absorption of proteins at 280nm is according to electrons from the rings on the amino acid such as His, Trp, etc. And if there is no such kind of amino acids in the protein, we might not be able to get what the amount of the protein really is. At the other hand, what makes biuret reaction work is by the copper ion reacting with the dipeptide bonds, since every amino acid has the peptide bond, it's more accurate and reasonable to use biuret reactions to determine what the amount of the protein is.
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What is the relationship between the solution particle size and its impact on the overall effectiveness of the solution?
The smaller the particle size of a solution, the greater its overall effectiveness. Smaller particles increase surface area, allowing for better interaction with other substances and faster absorption or reaction rates.
Why ammonium chloride in water becomes cold?
When ammonium chloride dissolves in water, it undergoes an endothermic reaction, meaning it absorbs heat from the surroundings. This absorption of heat causes the temperature of the solution to decrease, and as a result, the solution feels cold to the touch.
If you were asked to add 50 mL of a stock solution to a reaction vessel which piece of glassware would you use to obtain this volume of solution?
You would likely use a graduated cylinder to measure out and transfer the 50 mL of stock solution to the reaction vessel. Graduated cylinders are specifically designed for measuring and transferring liquid volumes accurately.
How does absorption refrigeration work and what are its key principles?
Absorption refrigeration works by using a refrigerant that is absorbed into a liquid solution, which is then heated to release the refrigerant as a gas. The key principles of absorption refrigeration include the use of heat to drive the refrigeration cycle, the absorption of the refrigerant into a liquid solution, and the release of the refrigerant as a gas through heating.
How do you calculate the heat of neutralization for a chemical reaction?
The heat of neutralization for a chemical reaction can be calculated by measuring the temperature change that occurs when an acid and a base react to form water and a salt. This change in temperature is then used in the formula Q mcT, where Q is the heat energy, m is the mass of the solution, c is the specific heat capacity of the solution, and T is the temperature change.
Where does the energy come from that is needed for an endothermic reaction the products or the reactants?
The energy needed for an endothermic reaction comes from the surroundings, not from the reactants or products. This energy is absorbed during the reaction to break bonds and allow new bonds to form, resulting in the overall absorption of heat.
What is the relationship between the solution particle size and its impact on the overall effectiveness of the solution?
The smaller the particle size of a solution, the greater its overall effectiveness. Smaller particles increase surface area, allowing for better interaction with other substances and faster absorption or reaction rates.
How do you monitor the rate of reaction when lumps of calcium carbonate dissolve in dilute hydrochloric acid solution?
by measuring the amout of gas produced, divided by the time taken
In which unit absorption of the solution measured in?
liters
Why ammonium chloride in water becomes cold?
When ammonium chloride dissolves in water, it undergoes an endothermic reaction, meaning it absorbs heat from the surroundings. This absorption of heat causes the temperature of the solution to decrease, and as a result, the solution feels cold to the touch.
If you were asked to add 50 mL of a stock solution to a reaction vessel which piece of glassware would you use to obtain this volume of solution?
You would likely use a graduated cylinder to measure out and transfer the 50 mL of stock solution to the reaction vessel. Graduated cylinders are specifically designed for measuring and transferring liquid volumes accurately.
What is the difference between colorimeter and turbidimeter?
A colorimeter measures the absorption of specific wavelengths of light to determine the concentration of a colored substance in a solution, while a turbidimeter measures the scattering of light by suspended particles in a liquid to determine the turbidity or cloudiness of the solution. Colorimeters are used for measuring color intensity, while turbidimeters are used for measuring suspended solids content.
What is ex thermal reaction?
An Exothermal reaction is a chemical reaction that produces heat making the solution warm or hot. It is the opposite of an Endothemic reaction which makes the solution colder.
What is silar method?
SILAR - SUCCESSIVE IONIC LAYER ABSORPTION AND REACTION is a low temperature and solution based process that can deposit atomic layers one layer at a time. The traditional SILAR cycle for a substrate is Dip in Cation precursor solution Rinse with distilled water Dip in Anion solution Rinse with distilled water
How does absorption refrigeration work and what are its key principles?
Absorption refrigeration works by using a refrigerant that is absorbed into a liquid solution, which is then heated to release the refrigerant as a gas. The key principles of absorption refrigeration include the use of heat to drive the refrigeration cycle, the absorption of the refrigerant into a liquid solution, and the release of the refrigerant as a gas through heating.
What is the Method of analysis of sodium selenate?
One common method of analyzing sodium selenate is through ion chromatography, which separates ions based on their charge and size. Another method is atomic absorption spectroscopy, which involves measuring the absorption of light by selenium atoms in the sample. Both methods are widely used for determining the concentration of sodium selenate in various samples.
What is thermal reactions?
An Exothermal reaction is a chemical reaction that produces heat making the solution warm or hot. It is the opposite of an Endothemic reaction which makes the solution colder.
