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What is the principle in the removal of grease spots by organic solvents?
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Why is grease and oil insoluble in water?
Water molecules form hydrogen bonds with each other, excluding the hydrophobic molecules.
Why can the fluids used to dry-clean clothing remove grease even when water cannot?
Water cannot interact with grease,due to its high surface tension, so when the water is removed from the clothing after cleaning it, the grease remains. The fluids used to dry clean clothing are actually chemical solvents. They dissolve the grease, so when the solvent is removed, the grease is also removed.
Which kinds of chemicals can be used to dissolve lipids?
Non-polar liquids (like alcohol).
Why is petrol not used as a dry cleaning solvent?
Petrol (gasoline) was used in the early days of dry cleaning. Its biggest disadvantages are its volatility (meaning there are large evaporation losses) and low flash point, making it a fire hazard. The most common solvents used today are halogenated hydrocarbons such as 'perc'. It is very effective as a grease solvent but has severe environmental issues. An alternative is to use 'hydrocarbon' solvents, which are in fact chemically similar to petrol, but much less volatile.
What feature of a soap molecule gives it cleaning ability?
soap is made of lye, an acidic and corrosive substance. soap cleanses by consuming the oils on skin and soiled surfaces.
Why can the fluids used to dry - clean clothing remove grease even when water cannot?
The fluids used to dry-clean clothing remove grease when water cannot because it chemically bonds thus making it invisible to other materials
What role did blanche have in the movie grease?
The Principle's assistant.
What is the best temperature for grease removal from the skin?
Cold about 32-50 degrees. The grease would clump together.
Why is grease and oil insoluble in water?
Water molecules form hydrogen bonds with each other, excluding the hydrophobic molecules.
How does the body use the organic molecule?
skin and the grease that gets stuck to your body
What organic compound is generally insoluble in water (hydrophobic)?
mostly all organic compounds are insoluble in water because water is a polar solvent and organic compounds are non polar . non polar substances are soluble only in non polar solvents like benzene etc.
Why might a solvent like turpentine be better for removing grease and grime than water?
Water repels oil and grease, which will make it difficult for the water to penetrate and move it. Solvents dissolve oils and greases, which effectively removes them from surfaces and, in many cases, prevents them from being redeposited on surfaces while the solvent is present. The solvents themselves are often easily washed off with water later.
What is the principle behind the grease?
Principal McGee was played by Eve Arden. Ms. Arden played a teacher in the 1950s TV show: Our Miss Brooks. She was promoted from teacher to principal in Grease.
Explain the importance of the principle grease and water do not mix to the process of lithography?
art is history ..btw one direction whooo
Explain the importance of the principle that grease and water do not mix to the process of lithography?
art is history ..btw one direction whooo
Why can the fluids used to dry-clean clothing remove grease even when water cannot?
Water cannot interact with grease,due to its high surface tension, so when the water is removed from the clothing after cleaning it, the grease remains. The fluids used to dry clean clothing are actually chemical solvents. They dissolve the grease, so when the solvent is removed, the grease is also removed.
What is the best stain removal product for a microfiber bedspread?
Liquid laundry detergent and a little elbow grease will usually get out the stain or make it almost unnoticeable.
