06/11 Water Absorption ASTM C 140 Water Absorption One of the most important properties of a good quality concrete is low permeability‚ especially one resistant to freezing and thawing. A concrete with low permeability resists ingress of water and is not as susceptible to freezing and thawing. Water enters pores in the cement paste and even in the aggregate. Absorption For concrete pavers‚ the test procedure involves drying a specimen to a constant weight‚ weighing it‚ immersing it in water for
Premium Concrete Kilogram Water
Emission Spectroscopy Lab Introduction: According to the Bohr atomic model‚ electrons orbit the nucleus in fixed paths with specific energies. Each path is therefore often referred to as an “energy level”. Electrons possessing the lowest energy are found in the levels closest to the nucleus. Electrons of higher energy are located in progressively more distant energy levels. If an electron absorbs sufficient energy to bridge the “gap” between energy levels‚ the electron may jump to a higher
Premium Photon Electromagnetic radiation Quantum mechanics
Experiment # 9: Optical Method of Analysis Use of Beer’s Law on a KMn04 Gregorio‚ Justin Edrik A. March 2013 Department of Chemical Engineering‚ Faculty of Engineering University of Santo Tomas España‚ Manila Abstract The purpose of this analytical laboratory experiment is to determine the unknown concentration of potassium permanganate (KMnO4) solution by finding its absorbance through the use of spectrophotometer. The preparation of four known concentration of KMnO4 was done namely‚ 2
Premium Spectroscopy Chemistry Light
The Visible Spectra Of Orange Soda Pop Objective : To measure an absorbance value of the different colour solutions by using Spectrophotometry Introduction Spectrophotometry involves the use of a spectrophotometer. A spectrophotometer is a photometer (a device for measuring light intensity) that can measure intensity as a function of the color‚ or more specifically‚ the wavelength of light (nm). The instrument also can be use on biological sample such as chlorophyll pigments and
Premium Light Absorbance Spectroscopy
Abstract This report investigates the absorbance of methylene blue and carmine red using a spectrophotometer to determine the absorption spectra of both solutions. The concentration of the unknown solution of methylene blue was found to be 1.07 x 10-5 M by using the molar extinction coefficient‚ with absorption of 0.547. It was also found that the results concluded confirmed beer’s law with an R2 value of 0.9989. Introduction Spectrophotometry is the quantitative measurement of the absorbance
Premium Spectroscopy Analytical chemistry Electromagnetic radiation
Tittle : Absorption Spectra and the Beer-Lambert Law. ɛ Purpose : Understanding of Beer –Lambert Law Introduction : When light passes through the colour solution ‚ the molecules of the solution absorb the quantity of light at a particular wavelength . The amount of light which is absorbed by solution depend on two things. 1. The length of the pathway of light 2.Concentration of colour solution. These are all explained by the Beer-Lambert Law
Premium 175 Chemistry Spectroscopy
According to the experimental IR spectroscopy for the E isomer of phenylcinnamic acid the peaks of the wavenumber were at 2952‚ 2518 1672 and 1426 cm-1. The peak at 2952 presents the double bond CH stretch for the alkene carbon. The peak at 2518 presents the carboxylic acid –OH peak. The peak at 1672 could present the carbonyl group. The aromatic ring peaks are around 1600 and 1426-1492. Different values could be seen for the z isomer. The wavenumbers for the IR spectroscopy are 3412‚ 3247‚ 1687 and 1552
Premium Benzene Proton Acetic acid
3.7 Nuclear Independent Chemical Shift Analysis The Nuclear Independent Chemical Shift is measured as magnetic shielding of a molecule have been calculated at the B3LYP/6-31G theory level. Aromaticities are represented by negative NICS Values and antiaromaticity is represented by positive NICS Values. The large negative NICS Values of the title compound represent stronger aromaticity [29-35].Our present investigation of the density functional calculations of doped fullerene with glycine shows several
Premium Chemistry Oxygen Spectroscopy
SPECTROPHOTOMETRY Spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength It involves with the use of a spectrophotometer. A spectrophotometer is a photometer that can measure intensity as a function of the light source wavelength. A spectrophotometer is commonly used for the measurement of transmittance or reflectance of solutions‚ transparent or opaque solids‚ such as polished glass‚ or gases. Principles
Premium Light Electromagnetic radiation Electromagnetic spectrum
TOPIC: THE DIGESTION AND ABSORPTION OF FATS Final Presentation [pic][pic] Submitted to:- Miss Mehmoona Khalid Submitted By:- Sana Nadeem Arooj Khayyam Shaista Butt Affaf Rahman SEMESTER- II CONTENTS • Introduction of Digestion • Digestion of Triglycerides in GI Tract • In Mouth • In Oesophagus • In Stomach • In Small Intestine • Lipids Absorption • Lipids in the
Premium Digestion Fatty acid Cholesterol