How do you find the moisture of a piece of popcorn?
349071
Weigh the a dry dish and record weight. Add popcorn and record weight. Dry in oven at 110 degrees celsius for at least 4 hours. Cool and record weight. The % moisture is the weight lost divided by the weight of the popcorn times 100%. If you are trying to find the water in the kernels you will need to grind them to a powder first or they could start popping. That is why popcorn pops you know. Good luck!
604031
get the mass of sucrose that you're dealing with\n\nget the atomic mass of sucrose itself\n\nmass of sucrose / atomic mass of sucrose = moles
1185872
I can think of two ways to measure the absorption and reflection coefficient of a material.  The first would only work with a polished surface.  First measure the intensity of a laser beam with a photodetector, then shoot the laser beam at the surface and aim the reflection at a photodetector.  Coefficient of reflection = transmitted intensity/initial intensity  (coefficient of absorption =1-reflection).  The other, harder way, which would work with any material, is to measure the heat gain in the target.\n\nFor this you're gonna want as small a piece of the target material you can get so that the laser still completely hits it.  Now attach a thermistor to the back of the target (again the smaller and thinner the target the better, ideal would be a foil just thick enough to be completely opaque).  Now shoot the laser at the target and measure the temperature as a function of time  It should be linear up until it starts radiating nearly as fast as it absorbs energy, so take points until it starts to level off and drop points after that.  Now find the specific heat of the thermistor-target apparatus by dipping it in water with a thermometer in it, using the initial and final temperature of the water, the volume of the water, and the initial temp of the apparatus, determine the heat it absorbed per degree it's temperature changed (this will actually give you specific heat*mass which is fine).  Now convert your temperature vs. time data to heat vs. time using the specific heat you determined (temp*(specific heat*mass)).  The slope of the line of best fit for this data will give you the rate it absorbed energy in watts.  Divide this by the lasers output in watts and you get the absorption coefficient.
120628
To detect starch just add some drops of iodine to the substance you want to test. Iodine is yellow/brown and turns dark blue/black in the presence of starch. As for fat, just rub your substance if it is a solid on a piece of paper or place a drop of it on the paper if it is a liquid. If the substance leaves a translucent stain on the paper( stain that does not evaporate) then it has fat.
652662
Try dusting it with Corn Starch
844123
I dont think it'll work very well - it wont matter which brand - popcorn pops faster or slower based on its humidity content - therefore how old it is.
441898
Corn cob is mostly cellulose and air. It is the trapped air that is the primary insulator.
734519
(1) Take a container and measure the length of the container. Let us say the length of the container is L. \n\n(2) Take a beam of light (preferably a monochromatic source like laser beam) and shine it through the empty container. \n\n(3) Measure the intensity of the light at the end where the beam has gone through the empty container. Let this be Io. \n\n(4) Now fill the container with the liquid whose molar extinction coefficient is unknown. Now measure the light intensity as the beam travels the length L of the container. The measured intensity is I.\n\n(5) Beer-Lamberts law is I=Io exp(-a L) where all the quantities have been experimentally determined except a which is the extinction coefficient. \nRearrange the above formula and we get, a=(-1/L)*log(I/Io) where log is to the base e.
575510
I found a web site with a lab on how to figure out releative density of a given liquid hope it helps.  It has all the instructions and materials needed listed on the site
894074
Assuming the drop of water is a sphere or close to one...\n\nvolume of a Sphere = (4/3) * pi * radius^3\n\nTo find the volume of a drop, measure out a small volume of water into a graduated cylinder.\nUse a dropper to take drops and deposit them into another container.  Count the number of drops needed to empty the measured water.\nvolume of drop = measured volume / number of drops
1004079
www.howstuffworks.com\nu may find somethin
501128
Inside or outside volume?\n\nInside:  Can't use Fluid => Gas or liquid.  Use solid like sand to fill the vase.  Takeout the sand and measure the volume either by weight/density or use another standard measuring device.\n\nOutside: Trace the curve, find out how many continuous sections are there that are connected at discontinuous boundaries, find volumes of each (use cylinder or cone volume formula) and add up the volumes.
772107
One way to check the amount of fat in a product and compare it to another is to check a nutrient data base.  \n\nIf you go to www.mypyramid.com, you will find lots of nutrition information available.  Choose MyPyramid Tracker in the box on the left.  Choose Assess Your Intake.  Then develop a free account.  Then you can get nutrition information on one food at a time, or on a whole meal, or day's worth.  \n\nI checked potato chips and corn chips.  Neither were in a comparable quantity.  So I identified the fat and calorie content of each and then compared.  With 75 calories of potato chips, there is 4.8 gm fat.  With 100 calories of corn chips, there is 6 gm fat.\nThere are several ways to calculate.  But since 75 is 3/4 of 100, then 3/4 of 6 is 4.5.\n\n75 calories of potato chips have 4.8 gms fat.  \n75 calories of corn chips have 4.5 gms fat.\nTherefore potato chips have more fat than corn chips.\n\nLenore
50070
When heated, the water in the kernels heats up and expands, causing the kernels to pop, producing popcorn.
442807
Popped corn if it's been added with oil. the water inside the kernal will also have escaped, making it lighter.
956746
One water molecule consists of two Hydrogen atoms and one Oxygen atom.\n\nSet yourself up an experiment.\nYou need a known weight (mass) of a compound that will absorb water and water moisture.  When breathing out, let the expired air pass into the same environment as the absorbing compound.  Do this a number of times.  Then reweigh the absorbing compound.  The gain in mass of the absorbing compound will be due to he water in the expired air.
710040
U could do a comparative analysis of the fat content of your cafeteria foods. Using a fixed mass of each food, extract the fat by mixing with petroleum ether, filtering and collecting the filtrate then heating to drive off the solvent. U could then find the mass of fat that remains (of course you would nned to know the weight of the empty beaker etc bofore anything ws added). Do your percentages, graphs etc. and you are good to go.