Reagent

Conclusion: The the precipitation reactions lab eight out of the fourteen occurring reactions were precipitates. A precipitate means that a solid substance was formed or a substance that is not aqueous was formed. The reactions that did not form a precipitate were DNR, which means that they did not react. At station one barium chloride and potassium nitrate did not react but barium chloride and silver nitrate reacted to form barium nitrate and silver chloride. The precipitate at station one was…

research students act in a manner that put them at risk. Research ethics frown at acts that are not health friendly. Undergraduate should never carry out familiar experiment without proper supervision. A student may understand the procedure and reagent handling so well, but should never do experiment without supervision and safety equipments on. Laboratories have rules that govern it use. Students should always adhere to them to avoid causing harm to themselves and others. It is unsafe to eat…

the solution. Then the students will observe the movement of the carmine particles on low power and high power. In exercise 1, experiment B, the students will need a rubber band, 30% glucose solution, starch solution, I2Kl solution, Benedict’s reagent, hot plate, 200 mL beaker, distilled water, 3 standard test tubes, disposable transfer pipettes, and 30 cm strip of moist dialysis tubing. The students will begin by preparing the beaker in which the dialysis tubing will be placed. They will…

macrocarpon, V. myrtillus and V. uliginosum with different chemical reagents Powder behaviour is also an important tool for the determination of constituents in herbal drugs and it provides an idea about their chemical nature. The different colour changes observed in long, short UV and visible light after treatment of fruit powder of V. macrocarpon, V. myrtillus and V. uliginosum with different chemical reagents viz. NaOH, KOH, H2SO4, HCl, HNO3, Na2CO3, FeCl3 and iodine vapours…

chromosomal centromere. STR analysis is a process containing three processes which are amplification, electrophoresis, and interpretation. In the first stage, amplification, DNA is extracted and added to chemical reagents which are then heated, which causes the two strands of DNA to separate. Reagents in which the sampling DNA is heated by contains markers, or primers, that identify the beginning and ending points of the DNA that is being duplicated. The primers are short, synthetic pieced of…

reaction was taken and came out to be positive because of the formation of bubbles around the product indicating the presence of a carboxylic acid. Two ways that could make the reaction greener could be the use of a catalyst, not stoichiometric reagents (Principle 5)…

Acetylsalicylic Acid with Salicylic Acid as the Limiting Reagent…

Physics practical theory: Hydrochloric acid is a clear is a highly corrosive, strong mineral acid with many industrial uses. Major production started in the Industrial Revolution, hydrochloric acid is used in the chemical industry as a chemical reagent in the large-scale production of PVC plastic, and MDI/TDI for polyurethane. It has numerous smaller-scale applications, including household cleaning, production of gelatine and other food additives, descaling, and leather processing. About 20…

A colorimetric 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT, Sigma-Aldrich Chemical Co.) assay was performed to measure the cell viability. Briefly, RAW 264.7 cells were treated with different concentrations of spermidine for 24 h or pretreated with spermidine for 1 h before stimulation with LPS for 24 h. After incubation, the medium was discarded, and MTT solution (5 mg/mL in phosphate-buffered saline, PBS) was added to each well and incubated for another 3 h at 37 °C. The…

After gram staining both the gram positive and gram-negative bacteria, the groupings were observed. For the unknown gram-positive bacteria, the cells were arranged in a cocci cluster, while in the gram-negative bacteria, the cells were arranged in a rod cluster. Both the gram negative and gram-positive bacteria exhibit a small yellow colony on the TSA plate. After 48 hours, the MSA plate was observed. Individual isolated colonies were found throughout the plate, with a yellowish color. The…