Boiling tube Essays

Purpose/Introduction The process of recrystallization is an important method of purifying a solid organic substance using a hot solution as a solvent. This method will allow the separation of impurities. We will analyze Benzoic Acid as it is dissolved and recrystallized in water and in a solvent of Methanol and water. Reaction/Summary In Experiment One we will be recrystallizing Benzoic Acid from water. In Experiment Two we will be recrystallizing Benzoic Acid using a solvent pair made up of Methanol

Water potential is often represented by the Greek letter, psi ψ .The higher the rate of collisions of the water molecules with the membrane, the greater the pressure on it. This pressure is called water potential. Water always moves from higher water potential to lower water potential. The standard unit for water potential is kilopascals (kPa), which is also the unit pressure. Pure water is designated a water potential of zero which has the highest water potential under atmospheric pressure at 25°C

The role of a mother is crucial in shaping the foundation of the household. In the novella, Mad Shadows by Marie-Claire Blais, two women, Isabelle-Marie and Louise play the important role of the ironic mother as they shape Patrice. Whilst both Isabelle-Marie and Louise play the role of the ironic mother, they essentially destroy Patrice physically, mentally, and emotionally. Isabelle Marie physically tortures him whilst Louise continuously favors him destroying him mentally. However, as Patrice begins

Project 1: Calorimetry CHM2046L-029 24920 Introduction Background Calorimetry is a method of measuring the enthalpy (heat energy gained or released) of various state changes, such as chemical reactions. Calorimetry can also be used in a number of other ways, however, including in microbiology (where the presence of various microorganisms can be determined as their multiplication increases thermal power) and in environmental science (where a calorimeter can be used to determine insect

A treacherous wolf is waiting outside the pigs home, growing more and more impatient to gnaw down on him and satisfy his hunger. He threatens to demolish his home and tear him apart if he does not let him in. What would you do in a situation like this?The first two pigs in “The Three Little Pigs” could not adapt fast enough to this scenario which resulted in their death, but the third pig managed to work his way around the wolf's tactics and give him a taste of his own medicine. When the pigs were

When making hot chocolate boiling water is used and is similar to the heat felt between them. “Tita was literally ‘like water for chocolate’—she was on the verge of boiling over. How irritable she was! Even the cooing she loved so much—the sound made by the doves she had reestablished under the roof of the house, a sound that had given her so much

Hawaiian culture. Food is agreeably the most embraced aspect of culture in Hawaii. Food preparations mostly consisted of broiling, boiling, an roasting. broiling was achieved by having rocks or coals sitting on a bed of ashes and leaving it for a while. unripe fruits could be boiled this way but soft foods such as fish would need to be wrapped in ti leaves. Boiling foods using wooden containers, the food would be placed in the container followed by water and instead of applying heat to the wood

you have a dry husk and that you have lots of dry wood to fuel the fire later. Boil some salt water in a make shift desalination, using a metal can or coconut shell, palm leafs and another can or bottle, setup in a way that the evaporation from the boiling water will catch on the palm leaves and run down the leaves draining into the catch. This water will still be salty but drinkable. Everyday look around for peace’s of rubber or anything that will make a lot of smoke this could even mean using parts

Summers have an air of relaxation to them for most people, but for me I can barely find a moment's rest. Because I work in the hospitality industry, summer is the busiest time of the year. My apartment is a 3 minute walk from the beach and yet I only rarely get to enjoy it. Although there are days, there are precious days, when I can just stop and smell the ocean. Where I can just sit there all day, seemingly without a care in the world. They don't happen often, but that's what makes them even more

Lobster is one of the most delightful feasts that exist. However, do people know the fact about the lobster that people cook also feel the pain like a human? Through this essay "Consider the Lobster" by David Foster Wallace, he verbosely examines this topic using the rhetorical strategies. Wallace uses both ethical and logical illustration of lobsters that are embodied in the passage, he trying to assure the readers who are into foods but handled the animal in a wrong way. Moreover, the 56th Maine

Light Refraction Lab Final Write-Up When light passes through any obstacle, it is affected in different ways, especially when the obstacle is transparent. In this lab, the objective was to show students what happens when light passes through water. “When light refracts into a substance in which it must slow down, the light ray will bend toward a line perpendicular to the surface it strikes” (Wile). Water forces a light ray to slow down, and so the light ray will bend. (Similarly, if a light ray

How Does the Type of Enzyme Affect How Much Apple Juice is Extracted From Applesauce Question: How does the type of enzyme affect how much apple juice is extracted from applesauce? Hypothesis: If seven drops of pectinase, cellulase, and a mixture of both are stirred ten times into 100 mL of applesauce and left for 5 minutes, then pectinase will catalyze the apple juice the fastest. IV: Type of enzyme (pectinase, cellulase, mixture of both) DV: Amount of applesauce extracted as measured in mL

Coffee, sweet nectar of the Gods. Always so delicious, so empowering, and once illegal?I'll be telling you some incredible things you never knew about that morning cup of coffee. Like for example, how in it became outlawed in England. when King Charles the second became worried that coffee shops were where people were conspiring against him. In addition to royal paranoia, the brew that we all love has a huge number of amazing facts that you need to hear to believe. Add cream and sugar if needed

Tribe considered the hot flowing earth that plops the pulsing blood of their island. Earth flows a short distance to the swirling vortex. Villagers regarded all the parts together as mother earth. Those gathered mesmerized their eyes followed the fiery colors of slow rotating earth, experiencing its heat as it disappears down into the island’s stomach. Two warriors lift a black ceremonial cauldron taken from a ship shipwreck that occurred centuries ago, placed it on the hot sand directly before

5. Turmeric and ginger. These common kitchen staples also help cure the symptoms and alleviate the pain, inflammation and swelling of the joints as home remedies for gout. It promotes urine flow to easily flush away toxins from the body and prevents it from becoming worse. a. Combine 1 teaspoon each of powdered turmeric and ginger. b. Mix thoroughly and add half of the mixture to a glass of warm milk. c. Drink twice a day, once before bedtime. These ingredients are not recommended for people with

We cannot imagine our life without genetic engineering. Genetic engineering it is science which is interested in studying the genetic makeup of living creatures, from the plant , animal and human, in order to know the laws that govern the qualities genetic of these creatures, hoping to intervene in those qualities positive intervention, and modify or repair the defects. The role of genetic engineering is an attempt to collect recipes Useful taken from the living organisms and transferred to another

be significantly lower by carrying out this process. This is because when centrifugation is carried out, the precipitate will be clustered at the base of the centrifugation tube and when the supernatant is poured away, little to no precipitate would be lost. This can be known by seeing that the supernatant of the centrifuge tube after centrifugation is clear and there is a lack of suspension in the

The test tube was closed and shaken with a stopper which was periodically removed to alleviate pressure. The test tube was then left on the test tube rack to allow the solvents to separate. It had separated with the ether phase on top and acetone phase on the bottom. To see what light was being reflected, the tube was taken to the projector and it was recorded that the light reflected was red. The ether phase

LabQuest were retrieved and and plugged in to warm up. While the colorimeter and LabQuest was warming up, 3 test tubes were labeled 1,2, and 3. Then, the control pH 7 solution was made according to Table 1 right in the corresponding test tubes. The test tubes were then immediately placed in a 100mL beaker with an ice cube in it to keep the solutions cold. The solution in test tube 1 was poured into a cuvette that was labeled with a piece of tape on the cap that said “B”. After the solution was

using a volumetric flask. This solution contains 1.0µmole/mL of glycine. 8 tubes were set up according to the following protocol and 2.0mL of ninhydrin reagent was then added to each of the 8 tubes and were placed in a boiling water bath for 20 minutes. After 20 minutes, the tubes from the bath was carefully removed, cooled in a beaker of cold water, then 8.0mL of 50% ethanol was added and mixed well. The absorbance of each tube was determined at 570nm and the absorbance were plotted against amount of