0
What else can I help you with?
What is a Two handled roman flask used for holy water?
A two-handled Roman flask, also known as a pilgrim flask, was used in ancient times to hold liquids like holy water during religious rituals or pilgrimages. These flasks typically featured two handles to easily carry and pour the contents, and their small size made them portable for travelers.
How do clean a beaker?
Acid washing it should do. I assume you are in a lab...in which case a 1:1 Hydrochloric Acid solution can be poured into the flask. DON'T FORGET TO PUT GOGGLES AND GLOVES ON. Put the lid on. Shake the flask and turn it to ensure all surfaces of the glass inside are being washed with the acid. Then, give it a good triple rinse with de-ionized water. If you are just at home, pour in some white vinegar and let it sit for a while. That should break up anything that's inside.
How do you prepare 1 M EDTA solution?
You will be using the disodium salt of EDTA (M.W. = 372.24 g/mole). It has been dried for 1day at 80°C to drive off any superficial moisture. Transfer it in desiccator for an hour.Weigh carefully about 1.95 g of EDTA (record tothe nearest 0.1 mg). Quantitatively transfer this into a 500 mL volumetric flask then add 2-3 mLof pH 10 ammonia buffer. Fill the flask about halfway to the mark with deionized water andswirl to dissolve. This process can take up to 15 minutes. Once dissolved, dilute to the markand then cap and invert the flask at least 6 times to get a uniform solution. Keep the solutioncapped.This solution is about 0.01M but for an exact value you need Standardization of this solution with Calcium Carbonate standard solution.
Should foods containing GMOs be labelled?
Yes, but only some times some times they could be harmful
How do you change cyclohexanol to chlorocyclohexane?
Eight mL of concentrated sulfuric acid has been cautiously added to 4 mL of water in 50 mL ground-glass stopper conical flask. The solution has been cooled in an ice bath until cold to the hand. Ten mL of cyclohexene has been added into the solution. The flask has been sealed with a greased ground glass stopper and it has been vigorously shaken for at 15 minutes until there was one homogeneous layer. The reaction mixture has been left for 10 minutes to increase completeness of reaction. The mixture has been poured into a 250-mL round-bottom flask, the previous conical flask has been rinsed with 125ml of water, and the rinsing has been added into the round-bottom flask. The flask has been fitted with a distillation adapter and a condenser set for distillation. The mixture has been heated to hydrolyze the intermediate and to distill the product. The distillate has been collected into a 100 mL conical flask. The distillation has been stopped once the distillate in the condenser was clear, with no oily droplets present and phase is left in the pot. The distillate has been saturate with 10 grams of sodium chloride. The mixture has been left for 15 minutes. The mixture has been transferred into a 250 mL reparatory funnel. The conical flask has been rinsed with 3 mL of diethyl ether for 3 times. All rinsing has been added to the reparatory funnel. The reparatory funnel has been shaken until two distinct layers were seen. The top layer has been transferred into a 100 mL conical flask. The ethereal extract has been dried by added anhydrous potassium carbonate until free flowing. The mixture has been gravity filtrated through fluted filter paper in to a 50 mL round bottom flask. The filtrate has been distilled and the distillate has been collect form as cyclohexanol. The distillation has been stopped when the temperature dropped. The sample and the bottle have been weighted to obtain the number of grams of cyclohexanol produced. The theoretical yield of cyclohexanol and the percent yield have been calculated.
What is laboratory Erlenmeyer flask?
Erlenmeyer flask is a conical flask made from glass or plastic, uset to make chemical reactions, volumetric titrations, to collect fluids from filtration, distillation, etc. Some times these flaks are graduated.
What additive does the gray tube in the order of draw have?
Order of draw is Yellow addictive is SPS blood culture invert 8-10 times. Light blue addictive is Sodium Citrate invert 3-4 times. Red addictive No clotting invert 5-8 times. Serum addictive Silica invert 5-8 times. Green addictive heparin invert 8-10 times. Lavender addictive EDTA invert 8-10 times. Last is Gray addictive Potassium invert 8-10 times
How many times should you invert a micro collection tube for mixing?
You should typically invert a micro collection tube 5 to 10 times for mixing. This ensures that the contents are thoroughly mixed without causing damage to delicate samples, such as cells or proteins. Always refer to specific protocols for the sample type, as mixing requirements may vary.
How many times to invert anticoagulant tubes?
8 times unless its a lt blue tube which is 4 times
Is Florence from Good times dead?
Yes
How many times do you invert the lavender top blood tube after the draw?
The lavender top blood tube should be inverted gently and slowly 8-10 times to ensure proper mixing of the blood with the anticoagulant. Over-inverting may cause hemolysis.
Stubb tells Flask that a blow from the hand is fifty times more savage than a blow from what?
a cane
What significant role did Florence Nightingale play in the Victorian times?
She was a nurse in the Crimean War
A flask contains 0.310 of liquid bromine Determine the number of bromine molecules present in the flask?
.310 MOLES 6.022*(10^23 ) molecules --------------- times ------------------------------------ = 1.8668 * 10^23 molecules 1 mole because there are 3 sig figs the answer should reflect that number. so the answer is 1.87 * 10^23 molecules
What is a Two handled roman flask used for holy water?
A two-handled Roman flask, also known as a pilgrim flask, was used in ancient times to hold liquids like holy water during religious rituals or pilgrimages. These flasks typically featured two handles to easily carry and pour the contents, and their small size made them portable for travelers.
Where does florence welch live?
Camberwell, South London. :D I've seen her a couple of times.
How do clean a beaker?
Acid washing it should do. I assume you are in a lab...in which case a 1:1 Hydrochloric Acid solution can be poured into the flask. DON'T FORGET TO PUT GOGGLES AND GLOVES ON. Put the lid on. Shake the flask and turn it to ensure all surfaces of the glass inside are being washed with the acid. Then, give it a good triple rinse with de-ionized water. If you are just at home, pour in some white vinegar and let it sit for a while. That should break up anything that's inside.
