MM 3320 : Report Mass Spectrometry Submitted by Velu K R NA12B033 Introduction Mass Spectroscopy is an instrumental method for identifying the chemical constitution of a substance by means of the separation of gaseous ions according to their differing mass and charge. This method helps identify the amount and type of chemicals present
The transmitted wave/light will experience refraction at the boundary between media. As we observe the diagram on the right, the individual wavefronts will bend as it cross the boundary. Once the wavefront cross the boundary, it travels in a straight line, hence why refraction is known as a boundary behaviour. The diagram shows a ray drawn perpendicular to the wavefronts which represents the direction which light travels. We can see that the rays travel in a straight line inside of the two media, and bends at the boundary.
Then we added the cut pieces to water in the beaker and noted the change observed. 4. We repeated steps 1-3 for Lithium as well OBSERVATIONS 1. Upon adding the drops of Universal Indicator we noticed the short color change in water from colorless to green to colorless proving that water is a neutral solvent. 2.
Often times this energy is visible part of the electromagnetic spectrum, 400-750nm. Different wavelengths result in different colors. Knowing roughly what the the wavelength of the substances are, the energy of the substance can be found the equation E=ch/λ. The breakdown of this equation is E stands for energy, c is the speed of
Inoculate the test agar medium: There are two types of inoculation that can be done. Phenol Red Broth – Glucose, Lactose, Sucrose The test results are as follows: for glucose, lactose, and Unknown 361 tested A/-, meaning that acid was produced, but no gas and it tested K for sucrose meaning that there was alkaline production. Procedure: 1. Obtain one tube for each sugar, usually one for glucose, lactose, sucrose, mannitol. Do not get them confused, they look the same, it is suggested that they be labelled immediately if they are not already labelled.
The money that we’re wasting on standardized tests could go to helping these students, but it’s practically thrown away. There needs to be a better use for this money. Not only are these tests a waste of money, but they’re also a waste of time. Standardized tests take between 20 to 25 hours out of the school year, but the amount of time that students spend studying for them is immeasurable. Students do not learn anything during the testing process.
The science of calorimetry is that the energy gained or lost by the water is equal to the energy lost or gained by the object. In calorimetry to find the amount of heat that was absorbed or released (q) by multiplying its mass (m), its specific heat capacity (c) and its change in thermal energy (∆T or Tf - Ti). The formula q=mc∆T is what was used in this experiment to determine the specific heat capacity of a small lead sinker. All substances are made up of particles that carry energy. The particles move faster when they contain thermal energy that is in the form of heat.
Make sure that you completely cover the egg with vinegar. If the egg begins to float, be sure to have enough vinegar in the cup to mostly cover the egg. Once this is done you will have to wait for the acetic acid in the vinegar to react with the calcium on the egg shell. You will begin to see bubbles begin to form on the egg shell. These bubbles are made because the reaction is causing carbon dioxide to be released.
Introduction Alka-Seltzer has been on the market since 1931 and has helped to relieve indigestion and upset stomach. The tablets began to fizz and bubble when dropped into water. “The fizziness happens when baking soda (sodium bicarbonate) and citric acid react chemically in water. They yield sodium citrate, water and carbon dioxide gas, which causes bubbles.” Based on this information, we will measure the reaction time of AlKa- Seltzer dissolved in 200 ml of water at 3 different tempertures in the first portion of this experiment. In the second portion of this experiment we will keep the temperature constant and divide the ½ tablet of Alka- Seltzer into 2 pieces ,3 pieces and an unbroken ½ tablet.
In a separate beaker, 10-3 M of synthesized SB was dissolved in 10 ml DMF. The two solutions were mixed together under stirring and resulting yellow precipitate solution was transferred to a sonochemical bath. After 60 minutes of sonochemical treatment, the resulting CdS precipitate was collected, filtered, washed with double distilled water and absolute ethanol several times to remove the unreacted chemicals, and finally dried in an oven at 80oC for 5hours. Similar procedure was adopted to synthesize uncapped CdS