An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons‚ giving it a net positive or negative electrical charge. The name was given by physicist Michael Faraday for the substances that allow a current to pass ("go") between electrodes in a solution‚ when an electric field is applied. It is from Greek ιον‚ meaning "going." The word ion also is responsible for electrical current being symbolized by the letter i in chemistry and physics. An anion
Premium Ion Atom
● Cobalt(II) Chloride Hexahydrate CoCl2.6H2O‚ was weighed in a weighing boat. The Cobalt(II) Chloride Hexahydrate was transferred into a 100mL volumetric flask dissolved in water. ● 25 mL of the dissolved was measured‚ using a graduated cylinder and few of the dissolved Cobalt (II) Chloride Hexahydrate‚ was poured into test tube. The test tube was labeled with a tape‚ to signify 25 mL and the spectrophotometer was used to record the U-V visible ABS (absorbance spectrum) with the wavelength of 515
Premium Chemistry Water Oxygen
CHEM 1105 Experiment 4: Determination of a Chemical Formula Introduction When atoms of one element combine with those of another‚ the combining ratio is typically an integer or a simple fraction. The simplest formula of a compound expresses that atom ratio. When two or more elements are present in a compound‚ the formula still indicates the atom ratio. To find the formula of a compound we need to find the mass of each of the elements in a weighed sample of that compound. For example‚
Premium Copper Chemistry Atom
Determination of KHP – Acid - Base Titration For determining purity of unknown KHP‚ acid – base titration was used. Molarity of titrant in this case NaOH was standardized as 0.04958(±0.00011) M. Purity of unknown KHP was calculated as 35.88(±0.16) %. • Introduction Acid – base titration is typical method of determining unknown figures. Acid – base titration means that by using neutralization between acid and base. Abrupt changing of pH says whether procedure is done or not. pH indicators
Free Titration PH indicator PH
3/4/14 Determining The Formula of a Complex Ion Luqman Khan Contents: Aim………………………………………………………………………………………………………………….……2 Results……………………………………………………………………………………….………………………2-6 - Raw Data………………………….………….……………………………………………………..…..2 - Qualitative Analysis………………………………………………………………………………….2 - Data Processing……………………………..……………………………………………………..3-5 - Graphical Results……………………………..…………………………………………….…….5-6 Conclusion…………………………………………………………………………………………………………6-7 Evaluation……………………………………………………………………………………………………………
Premium Measurement Ion Ammonia
of a Chloride Salt CHEM 1001 Purpose: To illustrate typical techniques used in gravimetric analysis by determining quantitatively the chloride content in an unknown soluble salt. Theory: AgCl(s) is a very insoluble solid‚ yet still does have some solubility. Because of these traits‚ the following reaction is able to occur: Ag+(aq) + Cl−(aq) → AgCl(s) . This reaction is able to occur in both directions. When a soluble silver salt such as AgNO3 is added to a solution containing Cl−(aq) ion‚ then
Premium Solubility Precipitation
Determination of the Rate Constant for a Chemical Reaction Department of Chemistry Abstract This experiment was performed to determine the rate constant k‚ for hydrolysis of tertiary butyl chloride to tertiary butanol. The solvent system for this reaction is 45% isopropyl alcohol and 55% water. The rate of hydrolysis of t-butyl chloride is measured by the decrease in the concentration of this reagent with time. The rate of decomposition of t-butyl chloride must be equal to the rate of formation
Premium Chemical reaction Chemistry Reaction rate
Ocean County College Department of Chemistry Identification of Metallic Ions Purpose: The purpose of this lab exercise was to perform and observe the flame tests of some alkali and alkaline earth metal ions. When electrons in metallic ions are grounded‚ their configuration is stable. In other words‚ the loosely bound electrons in the valence shell of the atom are satisfied at their “low” energy state. They do not require to be balanced by emitting any type of radiation or receiving any
Premium Potassium Metal Alkaline earth metal
people in the tap industry. They both have made or are making their mark in tap dance. All just at very different times and in very different ways. But without them shaping the art form that is tap dance many believe that it would not be were we see it today. Michelle Dorrance started dancing at a ballet school that was founded by her mother. While she was there she studied all forms of dance and by the time she was 8 she was accepted into what is known now as the North Carolina Youth Tap Ensemble.
Premium Tap dance Dance Savion Glover
Between the Pool and the Gardenias The sad‚ shocking story‚ "Between the Pool and the Gardenias" by Edwidge Danicat shows how past experiences can effect the actions we take in the future. The main character‚ Marie‚ lets her experiences with loneliness‚ many miscarriages and bad relationships contribute to her decision to take a dead baby off a street corner and bring it into her life. Marie is very lonely. She has no one in her life‚ not even a family. Besides her husband‚ everyone in her family
Premium Death Emotion Grammatical person