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Why is the color of leaf became dark blue after using the iodine solution is that means the leaf is healthy and have more starch?
because of the presence of starch
What is a graphic solution?
A graphic solution is when you answer a question by graphing.
How do you make spandex?
Spandex is a synthetic fiber. It is typically made through one of four processes including melt extrusion, reaction spinning, solution dry spinning, and solution wet spinning. Most of the spandex produced is done so using the solution dry spinning method. In the dry spinning method, a macro glycol with a diisocyanate monomer to produce a prepolymer. The prepolymer is then reacted with an equal amount of diamine. The resulting solution is then cured into fibers and forced through a spinneret. Once the solution is passed through the spinneret, it forms strands of liquid polymer which is heated in the presence of nitrogen and a liquid solvent. This forms strands of solid fiber which are bundled together to a desired thickness. The strands are then treated with a finishing agent. For clothing, spandex is often mixed with either cotton or polyester.
Why ammonia gas only acts as a week alkali in the presence of water?
Ammonia gas acts as a weak alkali in the presence of water because it partially ionizes to form ammonium ions (NH₄⁺) and hydroxide ions (OH⁻). This ionization process is not complete, which means that only a small fraction of ammonia molecules contribute to the increase in hydroxide ion concentration, resulting in weak alkalinity. The equilibrium established in the solution further limits the extent of ionization, making ammonia a weak base compared to strong alkalis that fully dissociate in water.
What can someone do with a seed crystal?
Grow a crystal in a supersaturated solution. Remember, you create a supersaturated solution by dissolving the solute in solvent at a high temperature, then allow the solution to cool very slowly.
What substance does iodine solution test for?
Iodine solution tests for the presence of starch. It turns from brown to blue-black in the presence of starch.
What is the percentage of saturation?
Percentage of saturation refers to how full a particular substance or condition is in relation to its maximum capacity. It is often used in the context of measuring the amount of a substance dissolved in a solution, such as oxygen saturation in blood or humidity saturation in the air.
A substance such as litmus that signals the presence of something?
An indicator is a substance that changes color in response to the presence of specific substances in a solution. Litmus is a common indicator that changes from blue to red in the presence of an acid and from red to blue in the presence of a base. This color change helps to identify the nature of the solution being tested.
What two requirements are necessary for a substance to be an eletrolyte?
For a substance to be an electrolyte, it must be able to ionize or dissociate into ions in solution. Also, it must conduct electricity in solution due to the presence of these free ions.
What is a necessary condition for extraction of a substance from an aqueous solution?
There must exist a solvent for the substance to be extracted in which this substance's solubility is greater than the substance's solubility in water, and the solvent also must not be miscible in water, so that an interface between the solvent and water will be formed in a mixture of the two.
What does iodine solution indicate?
Iodine solution is commonly used as an indicator in starch tests. When iodine solution is added to a substance, such as food or a biological sample, it turns blue-black in the presence of starch. This color change indicates the presence of starch in the sample.
How osmolarity affect buffering capacity?
Buffer capacity refers to the amount of strong acid or strong base that can be added to any solution before it changes the pH level by one. Osmolarity is the measure of how much of a soluble substance is present in any solution. Buffer capacity can be managed in a solution then by changing the osmolarity of solubles that affect buffering ability.
How does osmolarity affect buffer capacity?
Buffer capacity refers to the amount of strong acid or strong base that can be added to any solution before it changes the pH level by one. Osmolarity is the measure of how much of a soluble substance is present in any solution. Buffer capacity can be managed in a solution then by changing the osmolarity of solubles that affect buffering ability.
What is saturated solution and unsaturated solution?
Saturated solution is a solution that did dissolve to the maximum capacity. Unsaturated solution is a solution that didn't dissolve to the maximum capacity.
How can one determine the buffer capacity of a solution and what factors should be considered in finding it?
To determine the buffer capacity of a solution, one can measure the amount of acid or base that can be added to the solution without causing a significant change in pH. Factors to consider in finding buffer capacity include the concentration of the buffer components, the pH of the solution, and the presence of any other substances that may affect the buffer's ability to resist pH changes.
What ion causes a substance to be acid?
The presence of hydrogen ions (H+) in a substance causes it to be acidic. In an aqueous solution, hydrogen ions are responsible for the characteristic sour taste and ability to react with bases.
Which laboratory equipment would most likely be used for testing a substance for the presence of monosaccharides?
A polarimeter or a refractometer would most likely be used for testing a substance for the presence of monosaccharides. These instruments can measure the rotation of polarized light or refractive index, which can help identify the presence of monosaccharides in a solution.
