this is significant activity of the neurons to allow us to understand abnormality in the nerve that cause disorders. The objective of this study was to trigger a compound nerve action potentials (CAPs) and examine the effects of a stimulus voltage on a nerve and inspect their threshold‚ refractory period and also their velocity. Compound nerve action potentials (CAPs) are summed action potential of one nerve‚ one nerve consists of many neurons. We used the sciatic Lithobates pipiens nerve in this
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Lab Two; Chromatography of Food Dyes Jan Konig 28.04.2013 11:00am Chemistry 121‚ section DE Abstract: The second lab deals with the chromatography of food dyes which means you figure out what kind of compounds are used in a product like food color etc. by comparing the result to FD&C Food Dyes. You use six different food dyes‚ four food colors out of the store‚ two different Kool Aid powder and four different colors of candy like M&Ms you use for the chromatograph. At the end you try
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Identification of Unknown Organic Compound by Melting Point (M.P)‚ Boiling Point (B.P) and Infrared Spectroscopy Methods and Background The main objective of this lab is to identify the given unknown organic compounds with various methods. Identification of an unknown compound is important to perform through the process of melting point (M.P)‚ boiling point (B.P) and Infrared spectroscopy (I.R). Index of Hydrogen deficiency (IHD) and elemental analysis makes an experiment more efficient in
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CH201L S.Y. 2014-2015 Analysis of Oxygen-Bearing Organic Compound 2 BS Chemistry‚ College of Science‚ University of Santo Tomas Espana‚ Manila Philippines 1015 Abstract An unknown sample was given along with five standards to test the presence of oxygen in the sample. The unknown sample underwent five different chemical analysis namely Dichromate test‚ Tollen’s test‚ Lucas test‚ DNPH test‚ and Iodoform test. Each test will determine if the unknown sample will have the same reaction as
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initial deposit into a bank account or CD (certificate of deposit) is given by A=P(1+r/n)^nt A is the amount of the return. P is the principal amount initially deposited. r is the annual interest rate (expressed as a decimal). n is the number of compound periods in one year. t is the number of years. Carry all calculations to six decimal places
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Al(NO3)3 b. ZnSO4 c. Ba(C2H3O2)2 d. NaHCO3 CH3COOH Calculate the percentage oxygen in the following compounds: a. Na2CO3 b. BaSO4 c. BaO d. Al2O3 e. H2SO4 Determine the empirical formula and the molecular formula of a compound containing 40.0% C‚ 6.7% H and 53.3% O. The molecular weight of the compound is 60.02g. Calculate the percentage composition of a compound containing 27.93g Fe‚ 24.05g S‚ and 48.00g O. How many grams of silver is present in 3.45g Ag2S? Balance
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suspect that this unknown compound is either acetanilide or phenacetin. From the solubility of acetaminophen and phenacetin‚ we could know both of them are relatively soluble in boiling water but insoluble in cold water so that we took the recrystallization as the method to purifying the unknown component. After the unknown purified‚ then we could measure it melting point. This whole experiment is based on purifying and then finding the melting point of the unknown compound. The theory is that if a
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2014 Experiment No. 7 Unknown: 2 Compound: Table 6.1Physical Examination State Liquid Odor Smells like adhesive paste Color Pink-orange Flammability Flammable Table 6.2Physical Constant: Melting Point Parameter Experimental Theoretical (From Literature) Melting Point (oC) Trial 1 Trial 2 Average 88 88 86 86 Table 6.3Solubility Test Sample Solubility Solubility Class Water Ether 5% NaOH5% Na2CO3 5% HClConc. H2SO4 Unknown Sample + + + + + + Basic Compound Table 6.4Qualitative Tests for
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that natural food have‚ certain chemical compound have discovered and developed certain ways to preserve food and extend their life for longer. Furthermore‚ there are many different types of chemical compounds were added to our daily diet‚ yet certain chemical compounds can be listed on the nutrition label‚ and even they cannot be tested or seen on the products. Butylated hydroxyanisole and Butylated hydroxytoluene and Ethanol are among of that chemical compounds‚ which were used in certain food and
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using the equations‚ simple and compound interest. These are example I have achieved this school quarter. Discuss one or two topics or concepts that have been a struggle so far. The concepts that I have a struggle with this term start with rounding and estimating like for example‚ I would have something like maybe 47 but I know how you round to the closer which will be 50 and if the whole number is 1. The second concept I been struggle with has been simple and compound interest has been the worse.
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