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What are the composition of nelson's reagents and their functions?
Nelson's A solution contains acetic acid, which acts as a fixative and decalcifying agent, while Nelson's B solution contains alcoholic formalin, which is a fixative. Together, these reagents are used in histology to preserve tissues for microscopic examination.
Why does swirling or shaking a solution and its drying agent hasten the drying process?
Swirling or shaking a solution with a drying agent increases the surface area of contact between the solution and the drying agent, enhancing evaporation. This helps to remove moisture more efficiently compared to just letting the solution sit still.
What is the strongest oxidizing agent in a solution of nitric acid?
Nitric acid itself is a strong oxidizing agent in solution, primarily due to the presence of the nitrate ion (NO3-). The nitrate ion can easily accept electrons and undergo reduction reactions, making nitric acid a powerful oxidizing agent.
How can sodium bicarbonate be used to create a solution with water for various applications?
Sodium bicarbonate, also known as baking soda, can be dissolved in water to create a solution that can be used for various applications. This solution can be used as an antacid to relieve heartburn, as a cleaning agent to remove stains and odors, and as a leavening agent in baking to help dough rise.
How can you make a perm solution?
To make a perm solution, combine a reducing agent (such as ammonium thioglycolate) with an alkaline solution (such as ammonium hydroxide) and a conditioning agent. These ingredients work together to break and reform the disulfide bonds in the hair, allowing it to take on a new shape. It's important to follow a specific recipe and procedure to ensure the perm solution works effectively and safely.
Why would you not use toothpaste during the plaque control session?
Toothpaste can interfere with the disclosing agent used to visualize plaque during a plaque control session, making it difficult to accurately identify areas of plaque buildup. It's recommended to use disclosing agent alone to contrast against the teeth and highlight areas that need improvement in oral hygiene.
When to use a disclosing agent?
at bedtime
What is the best time of day to use disclosing agent?
Answer is ( D) At bedtime.
What is the best time of day to use a disclosing agent?
Answer is ( D) At bedtime.
What are the composition of nelson's reagents and their functions?
Nelson's A solution contains acetic acid, which acts as a fixative and decalcifying agent, while Nelson's B solution contains alcoholic formalin, which is a fixative. Together, these reagents are used in histology to preserve tissues for microscopic examination.
Why does swirling or shaking a solution and its drying agent hasten the drying process?
Swirling or shaking a solution with a drying agent increases the surface area of contact between the solution and the drying agent, enhancing evaporation. This helps to remove moisture more efficiently compared to just letting the solution sit still.
Benefits of cetylpyridinium chloride v chlorhexidine as an anti bacterial agent?
a. there is less staining of the teeth with cetylpyridinium chloride compared to the use of chlorhexidine b. efficacy of plaque inhibition of both chemicals (topical bacteriocides) depends on concentration in the mouthrinse c. chlorhexidine is a less stable solution: additional ingredients (e.g. fluoride) contained within some mouthrinse solutions may inactivate the plaque inhibitory agent
Which agent of metamorphism can cause the overall composition of rock to change?
Hydrothermal fluids are a common agent of metamorphism that can cause the overall composition of a rock to change. These fluids can introduce new minerals into the rock through chemical reactions, altering its composition and structure.
What agent of metamorphism can cause the overall composition of rock to change?
hydrothermal solutions
Does agent cool blue really turns your teeth blue?
No, it turns the bacterial plaque on your teeth blue. That lets you see how well you are brushing.
What is composition of formalin?
Formalin is a saturated solution of formaldehyde, water, and typically another agent, most commonly methanol. In its typical form, formalin is 37% formaldehyde by weight (40% by volume), 6-13% methanol, and the rest water.
Why is sorbitol solution used in mouthwash?
it is used as a sweetening agent
