over the Benedict’s test method. The concentration of the coloured complex can be determined with the spectrophotometer at Absorbance 540.The sugar concentration of unknown sample can then be read off a calibration curve(standard curve) created using known sugar concentrations.The dilutions of a solution of known concentration are used to determine the concentration of unknown. Being familiar with the background information about reducing sugars and various methods used to identify them‚Biotechnology
Premium Water Boiling Sugar
Penny Leventis Period 4 Decades project report 15 March 2012 Styles of the 1940s One of the most iconic eras for fashion was the 1940s. This decade combined practicality with simple and timeless elegance. However not much focus was on fashion during the forties due to World War II‚ which took place from 1939 to1945. The war brought hardship and lack of supplies such as fabrics. However after the war‚ style seemed to emerge once more. Due to the increase in population
Premium World War II
“A penny saved is a penny earned” (Benjamin Franklin). In The United States virtually anyone can find a symbolic reminder of why the nation has flourished the way it has and why it continues. The pride that a usual American holds within themselves is the reason why the The United States continues to flourished rather then to terminate all the advancements. The smelly‚ bent‚ copper penny is one of those present reminders of the path and transition the nation had to go through in order to get to the
Premium United States
LABORATORY EVALUATION OF SOIL MOISTURE USING MICROWAVE TECHNIQUES 1K .Prasanth ‚ 2K .Shashank ‚ 3M .Ashok ‚ 4M . AV H Krishna ‚ 5Zachariah C Alex 1B.TECH (ECE)‚VIT University‚Vellore‚2B.TECH(ECE)‚VIT University ‚Vellore‚ 3B.TECH (ECE)‚VIT University‚Vellore‚4B.TECH(ECE)‚VIT University ‚Vellore‚ 5Senior professor‚ VIT University‚ Vellore. ABSTRACT Microwave techniques can be used to measure soil moisture content‚ mineral content and fertility of the soils. A microwave set up is
Premium Microwave Soil
In the Penny Cleaning Lab‚ my hypothesis‚ which stated that the lemon juice would be the best at cleaning the penny since it is an acid and acids are particularly good at cleaning metallic substances‚ was indeed valid. First‚ we started out with 1mL solutions of all the substances in the test tray. We dipped the pH paper in each solution for about a second and recorded the pH level for each substance. Before starting‚ we noticed that all the pennies were in some shade of brown‚ which I predicted
Premium Nutrition Water Coca-Cola
According to the article it seems the retail store we all know as JC Penny hasn’t been doing so well as far as their sales have been going which is something the public was probably unaware of. The article stresses how well they are doing and the come up they made however are they really making a come up. By the end of the year will they meet their sales needs? The article explains. According to the article JC Penny‚ “the company is seeking to calm investors who are growing pessimistic about a turnaround
Premium Retailing Department store
added the solution will quickly start to turn yellow due to formation of MnO2. If this happens anyway‚ add some more sulphuric acid to reverse the process. The solution should be clear with a slight green tinge. Chapter 15 – Volumetric analysis (Redox titrations) To prepare a standard solution of ammonium iron sulphate and use this solution to standardise a solution of potassium permanganate. Potassium permanganate (KMnO 4 ) is a powerful oxidizing agent and is a deep purple colour. It cannot be
Free Titration
the U.S should stop making pennies. Pennies just cost to much to make‚ and they waste our time counting them over counters and at food service windows. Also‚ other countries have banned the penny and so should we. The penny costs more than its worth. Even though‚ pennies aren’t worth that much‚ the money wasted to produce them can add up to millions of dollars over time. It costs 2.4 cents to produce a single one cent coin.(Story) Taxpayers lose money every time a penny is made. It may not seem like
Premium
each of the following reactions is a redox reaction: a) H2(g) + I2(s) → 2HI(aq) b) 2NaHCO3(aq) → Na2CO3(aq) + H2O( ) + CO2(g) c) 2HBr(aq) + Ca(OH)2(s) → CaBr2(aq) + 2H2O( ) d) PCl5( ) → PCl3( ) + Cl2(g) 2. Write three different definitions for a redox reaction. 3. Explain why fluorine has an oxidation number of −1 in all its compounds other than fluorine gas‚ F2(g). 4. When atoms of one element combine with atoms of another element‚ is the reaction a redox reaction? Explain your answer. 5
Premium Chemistry Chemical reaction Hydrogen
Gold Penny Lab Purpose: The purpose of this lab is to convert a regular penny into a “gold” penny. Background: Chemistry is a branch of physical science that studies the composition‚ properties and behavior of matter (www.acs.org). Sodium hydroxide is considered to be a strong base because it breaks up in water. When mixed with certain metals it produces potentially explosive hydrogen gas. Many alchemists believed that doing certain chemical reactions that they would be able
Premium Chemistry