Why is it important to use seperate measuring apparatus for anylase and startch?
924605
It's not intrinsically important.  It depends on what you intend to dowith the starch.  The reason you wouldn't want to use the same measuring apparatus for amylase and starch is that amylase will catalyse the reaction of converting starch molecules to simple sugars.  Since amylase is just a catalyst and is not "used up" in the reaction, a small amount of the enzyme can break down a large amount of starch.  The only limiting factor in how much it breaks down is simply how much it comes in contact with.  \n\nNow, if you are doing something that reqiuire's pure starch, without contamination of simple sugars, then it is very important to use separate mesuring apparati, or at least to wash the same apparatus thoroughly between measuring starch and amylase.
1057804
try this\n\nhttp://en.wikipedia.org/wiki/Category:Laboratory_equipment
26771
Advantages compared to what apparatus?? Please be precise...
870750
It sounds like there was a problem in making the dilution series. If the two samples are independent (If the 10^-4 sample was not made using the 10^-3 sample) then yes, I would average them (and it should be 70X10000- you have an extra zero). However, if they came from the same series I would use the sample that you have more confidence in. If the colonies were well spread out and not touching, I would use the 10^-3 sample. If there is a possibility of multiple colonies on top of each other when you counted the 10^-3 plate, then use the 10^-4 number.
1139007
If you asked a scientist you might get a different answer than if you asked a layman.  Let's compare a kilogram of lead with a kilogram of aluminum.  You likely would use the same scale to measure both samples.  But, the aluminum is much lighter and would take up far more space than the lead.  The samples would displace different amounts of air and the buoyancy of air would affect the scale readings by a small amount.  Therefore to obtain accurate measurements you must weigh the samples in a vacuum or calculate the buoyancy and compensate the weight measurements.  If this is true for lead and aluminum it is even more true for lead and feathers (or even lead and butter).  Chemists often do have to compensate for air buoyancy when measuring chemicals so that when they react none are left over.
293299
Yes. In an induction disk meter there is a spinning disk which spins faster if you use more power. an optical sensor can be used to sense this speed and input into the totalizing circuits.
418207
Both are important, but the proper ratio of each is the most important.  I haven't had physics for so long...maybe you should also try the physics section so that some smart physicist will sit down and figure it out for you.
252495
It's a relatively inexpensive way to measure the absorbance of aqueous solutions in the visible region of the spectrum.  Absorbances can be related to concentrations, so this is heavily used in quantitative chemical analyses.
787538
It also may be known as strain Gage.\n\nYou can use this device in place of pressure strips.
372062
Metric. Thy still use the same ones.
1168680
To purify (separate) the product you want from impurities. For example, if you wanted to separate a mix of alcohol and water, you would use the distillation flask along with a heating mantle (like a Bunsen burner, but designed for flasks) to heat the mixture; because alcohol has a lower boiling point than water, it would evaporate faster and re-condense in the collection flask, leaving water in the distillation flask.
747804
There are multiple units usable.  Try pascals, psi, torr, atm
159715
neither - its better to use the vorbel stremlin method - its a proven fabrication method that was first employed in the CERN, Switzerland
966327
I agree; c) is the right choice.  The other units are used to measure:\n\na)  power ratio\nb)  pressure\nd)  pressure (again)
1000766
The low technology approach is to use a densitometer.  This can be as simple as a hydrometer as used in the brewing industry to check for specific gravity (density).  From a measured density and a known volume and if you know the densities of both liquid components of a binary mixture you can work out the relative proportions of each using simultaneous equations and hence the concentration of one in the other.
841558
could be several reasons;\n\nif the material you're weighing is volatile and is evaporating you will find it impossible to get an accurate weight, further the fumes migh condense later at muck up the weighing mechanism,\n\nalso if the material contains solvent that is evaporating, or if its degrading by loss of gas or whatever you wont get an accurate reading\n\nI suppose that if the sample is hot it will conduct heat through the scale mechanism which might damage it - these instruments are very sensitive\n\nim sure there's lots of other reasons but these are the fiirst that come to mind\n\nhope this helps
1176031
an anameter  -it is used fr measuring current passing through the circuit.\n\n conical flask -its flat bottemed used to hold liquids in reactions where heating is not required.\n\nburette -used to add one solution to another and also acurately measures the amount of liquid used.\n\ndropper pipette -used to add small but accurate amount of liquid to another.\n\nfunnel - used to carry out filtration.\nboiling tube-made of thick resistant glass used fr strong heating.\n\nround bottemed flask-used to hold liquids in reations where heating is required.\n\nwatch glass-holds solids\n\nevaporating dish-it can be gentely heated\n\nmortar and pestle-fr grinding and mixing solids\n\ngud luck!hope it helps