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Why is it important to rinse glassware 3 times with water and 3 times with ionized water in a chemistry lab?
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Why ist necessary to rinse the clean burette before filling it with the unstandardised sodium hydroxide solution?
It is a rule of safety in chemistry: to remove any micro-drops of water from the pipette.
What you should do if a concentrated acid falls on your body?
Rinse the area immediately and notify your instructor. Continue to rinse the area for at least 15 minutes.
How do you clean a burette with stopcock stuck in it?
Rinse with hot water outside try to rinse only outside, stop cork will be loosed and pulled out easily.
How do you prepare 1 normality ammonium acetate solution?
A normal solution contains 1 equivalent mass, in grams, of the solute in 1 litre of solution. Firstly, you calculate the mole mass of ammonium acetate. (77g). Weigh this out in a small, clean beaker. Add de-ionized water to dissolve the solid, then transfer the solution to a 1 litre volumetric flask, remembering to wash out the beaker three times with small volumes of de-ionized water, and add the washings to the volumetric flask. Similarly rinse the glass rod with small volumes of the water into the flask. Now add de-ionized water to the 1 litre mark and then mix the solution thoroughly by inverting the stoppered flask many times. Normality is not used much any more, molarity is more usual, though for this solid the two happen to be the same. Ammonium acetate has the systematic name ammonium ethanoate.
Why don't you have to rinse the flask in between trials in a titration?
You must rinse to keep the booger from Mr Connoly's crack flaking into your food....Founded by Dr Amilcar / GOD
What methods should be used to clean glassware?
The proper method that should be used to clean glassware is to rinse it between three to four times with deionized water. If it requires scrubbing then use hot soapy water and a brush to clean and then rinse with water before rinsing again with deionized water.
Why dishwashers affect glasses?
Minerals in the water make your glassware look cloudy. You can use a finishing rinse product.
How do you know that glassware is clean?
What method should be used to clean glassware in a labortory
Why is it necessary to pre rinse volumetric glassware with the solutions to be measured in titration experiment?
The purpose of rinsing is to avoid any contamination of samples.
Why is it necessary to pre rinse volumetric glassware with the solution to be measured?
The purpose is to avoid contamination with other substances.
What would happen if you didn't rinse out the plate in between chemistry testings?
Contamination, which would lead to erroneous results and damaged equipment.
How do you get wax off tomatoes?
First, wet the tomato. Then, using a small amount of dishwashing detergent and a wet dishcloth, clean the tomato the same way you would a fragile piece of glassware. Rinse the tomato clean, and that's all there is to it.
What is plastic wash bottle used for?
Plastic squeeze bottles are used for many things. One of their most popular and useful functions is as receptacles for condiments such as ketchup, mustard and mayonnaise. They make it easier to direct the flow of the condiment than an old fashioned glass bottle.
Why is it important to rinse out shampoo and conditioner?
so that u wont get flakes in ur hair
Why ist necessary to rinse the clean burette before filling it with the unstandardised sodium hydroxide solution?
It is a rule of safety in chemistry: to remove any micro-drops of water from the pipette.
Is it important to rinse a graduated cylinder after measure acid before measuring base?
fouche is my protoge
Why is it important to rinse shampoo off?
Shampoo that is not rinsed off properly could dry to a flaky powder.
