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Packed column consist of porous substance as a packing in the column which provides contact between the fluids used,while different types of trays are used depending on the ease of separation instead of a packing in a usual tray column.
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Why your finger sticks to a metal ice tray just taken from the refrigerator?
This is a matter of melting and freezing. When you touch the tray, the warmth from your finger quickly melts a bit of a ice and creates a thin layer of water between the tray and your finger. Since the tray is so cold, it quickly freezes that thing layer of water forming an icy bond between your finger and the tray.
What is the function of the measurement tray on a triple beam balance?
what is the function of a measurement tray on a triple beam balance
What is the metal plate called on a toaster?
a tray
What type of friction is there?
1) Static Friction: When it's hard to move an object (i.e.: moving a large refrigerator box is difficult because of the large mass pressing down and the static friction between the box and the floor)2) Sliding Friction: Tiny friction particles in between objects that slow them down (i.e.: moving a cafeteria tray in the lunchline--there's a little bit of friction between the tray and the metal bar, which causes the tray to move slowly)3) Rolling Friction: The friction between wheels (or anything rolling) and the ground. (i.e.: riding a bike. Without rolling friction, we would speed out of control. Walking would also be impossible because our feet collide with the pavement and gently roll off. With no friction, we'd be slipping and sliding everywhere! =D)
Why would an orange roll off your cafeteria tray if you stopped suddenly?
An orange would roll off of your cafeteria tray if you stopped suddenly because of inertia. Inertia means that something that is moving will continue moving until something causes it to stop. In English, the tray is moving, the orange is moving (both at the same speed and direction). When you stop the tray, you didn't stop the orange -- it rolls.
Is a packed condenser more efficient then an Vigreux column?
Distillation is a common laboratory technique. It is used to separate mixtures with differing properties; the efficiency depends on the rate of heat exchange between the fluid being distilled and the coolant.Direct flow distillation: Suitable for mixtures, whose components have boiling points which differ by at least 25°C.Reverse flow distillation: The separation is successful for mixtures whose components have boiling points which differ by at least 0.5°C.Distillation Columns The diameter of the column defines the throughput and the acceptable pressure drop, while the height defines the distillate purity. Uncontrolled condensation on the column walls is reduced by insulation with silver coated vacuum jackets (10-6 mbar). The vacuum jacket has viewing strips.The column type and its packing also influence separation efficiency. Tapered glass items are available to US standards ASTM E676 Standard Column Types Packed Columns with Conical Ground Joints Packed columns can be fitted with different types of packing for various distillation requirements.Packed Columns with Conical & Spherical Joints Conical joint at the top and spherical joint at the bottom.Packed Columns with Spherical Ground JointsVigreux ColumnsVigreau Columns have a lower separating efficiency than packed columns with Rasching rings but can work with small volumes of fluid and produce low pressure losses.Vigreux Columns with Conical Ground JointsVigreux Columns with Conical and Spherical Ground JointConical joint at the top and spherical joint at the bottom.Vigreux Columns with Spherical Ground JointsBubble Cap Tray ColumnsBubble tray columns have high separating efficiencies, they are very suitable for analysis of processes that will be substantially scaled up.Bubble Cap Tray Columns with Conical JointsBubble Cap Tray Columns with Insulating Jacket
Why do packed columns allow larger liquid gas contact than tray columns?
Conditions favouring tray columns:- variable liquid and/or vapour loads- low liquid rates · large number of stages and/or diameter- high liquid residence time- dirty service (plate columns are easier to clean)- presence of thermal or mechanical stress due to large temperature changes which might lead to cracked packings- exotherms requiring cooling coils inside columnSource:http://www.separationprocesses.com/Operations/POT_Chp02h.htm
What is the difference between sterile tray and peel-wrapped instrument?
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What is the difference between a food warming tray and a crockpot?
A food warming tray usually just gets hot enough to keep food that is already warm, warm. A crockpot on the other hand will keep food warm and get hot enough to cook it.
How did rifles work in 1775?
Clarification: Muzzle Loaded - You poured powder down the barrel, packed it with the ram rod, put a ball in, packed it down with the ram rod, pulled the flint back, poured powder in the tray, pulled the trigger.
Why your finger sticks to a metal ice tray just taken from the refrigerator?
This is a matter of melting and freezing. When you touch the tray, the warmth from your finger quickly melts a bit of a ice and creates a thin layer of water between the tray and your finger. Since the tray is so cold, it quickly freezes that thing layer of water forming an icy bond between your finger and the tray.
How did observation play an important role in the discovery of penicillin?
he saw the mold growing on the one tray when the rest of the trays were clear. So it got him to thinking, about what was the difference between the two trays? Could that affect the virus and kill it?
How will you fasten the fetal pig in the dissecting tray?
stick in pins in between the hoofs tendons.
What is the plural of tray?
Trays is the plural of tray.
What is the difference between a personal computer a server computer?
A server computer serves other computers (in a network) with programs and/or files. Think of it like a cafeteria. You get your tray (computer), walk down the line (pull down the file menu), when you see something you need or want you ask for it to be put on your tray (downloaded to your desktop computer). Your desktop computer is the same as a personal computer.
When purchasing laptop what is the difference between tray load and slot load?
Ok, so a tray load is when a you must press a button and a slide will pop out of the side of your computer for you to place a disc on top of and then push back inside. With slot loads you can simply push the disc into the slit on the side of a computer and it will drag it in from your hand. they work the same they just take your disc differentely
What is the difference between the paper tray and the Automatic document feeder in a fax machine?
A paper tray will just take (or make) a stack of documents in order, without any reversing or double siding. Sometimes it is referred to as the place where the printed paper exits. An automatic document feeder will flip and move those documents around, and also duplex a large stack of documents.
