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During the development of a chromatogram, it is better to cover it with a beaker to prevent evaporation, which will affect the movement of the solute and solvent system. This will ensure that the chromatogram will develop properly.
Sherwood Ritchie
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What would happen if the beaker is left uncovered during the development of the chromatogram?
Bad things happen. The mobile phase evaporates and thus it's composition changes. The vapor phase above the chromatogram is not saturated or at equilibrium, and this affects the movement of the sample on the solid phase.
3 Why do the pigments become separated during the development of the chromatogram?
The chromatogram, or chromatography paper has solvent on it. Each pigment will separate itself from the others due to the relative solubility of that particular pigment.
During which stage of the moon's development was the surface covered with hot molten rock?
Second stage
Why do you need to cover the beaker with a lid during paper chromatography?
During the development of a chromatogram, it is better to cover it with a beaker to prevent evaporation, which will affect the movement of the solute and solvent system. This will ensure that the chromatogram will develop properly.
What is the function of beaker?
the beaker is used for measuring liquids and chemicals during experiment...
When was the beaker invented?
The beaker was invented around the 16th century. It is believed to have been developed in Europe, likely by alchemists or chemists during the Renaissance period. The exact date and inventor of the beaker are unknown.
How the land like during the quaternary period?
During the quaternary period, the Ice Age took place. It was a time of dramatic glacial development and at the time, glaciers covered around 30 percent of the Earth. Some areas like North America and parts of Europe were covered in grasslands.
What is beaker can do?
Beaker is usually used in holding liquids and work with them during chemical analysis. Generally Beakers are calibrated to allow the user to measure the liquid that is to be used. :'> Right?:)
Why must the stem of the funnel touches the inside surface of the collecting beaker during the filtration?
it's done to minimize the mixing of air into the filtered solution. By touching the stem to the collecting beaker, the solution flows into the beaker smoothly rather than splashing into it.
Why must the stem of the funnel touch the inside surface of the collecting beaker during filtration?
it's done to minimize the mixing of air into the filtered solution. By touching the stem to the collecting beaker, the solution flows into the beaker smoothly rather than splashing into it.
Which continents was not covered by ice during the pleistocene ice age?
Australia was one continent not covered by ice during the Pleistocene Ice Age. Africa is another continent not covered during this time.
What are the cultural differences between areas that were covered by ice during the last age and areas that were not covered?
industrialization occurred earlier in areas that had been covered
