Experiment (6) Determination of ash content Aim: To determine the ash content in 5 samples of milk Principle: This experiment wills comparison between all samples. We will weight three times. First type the weight of crucible. The second is crucible and the sample the last about the weight of ash after removing from furnace. Apparatus: 1. clean crucibles 2. Analytical balance 3. Clean tongs 4. Tripod 5. Bunsen burner 6. Silica triangle Instruments: 1. Furnace Procedure:
Premium The Crucible Laboratory equipment Combustion
Procedure: Melting point of RCO2H Before observing the melting point of the unknown sample‚ the melting apparatus had to be standardized with a standard substance having the melting point of 151°C-153°C. After placing a small sample of the standard in a capillary tube and inserting the tube into the sample tube holder‚ the plateau on the device was set to 15°C below the expected melting point. After its temperature reached the plateau‚ the temperature increment was set at 1°C per minute‚ and the
Premium PH Titration Laboratory glassware
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
Gravimetric Determination of Calcium ABSTRACT Determining the mass of a pure compound is a method of a gravimetric analysis. One of the gravimetric analyses is the precipitation; it is a method of separating the analyte from the unknown sample as a precipitate where it will be filtered and converted into a known composition that can be weighed to determine its mass (Skoog et al‚ 2013). Determining the mass of calcium by using gravimetric analysis was the objective of the experiment. A 25 mL
Premium Water Management Standard deviation
DETERMINATION OF THE HEAT OF SOLUTION BY THE VANT HOFF ISOCHORE METHOD Jan Vincent Arafiles‚ Merry Joy Arzaga‚ Anne Louise Ayson‚ Lovely Jenny Buenaflor Group 2 3A-Biochemistry chem401 laboratory ABSTRACT Thermodynamic values can be determined using the Vant Hoff isochore method. This method entails the use of equilibrium systems to determine the change in enthalpy of the solution‚ which can b related to the change in internal energy of the solution. The van ’t Hoff isochore relates
Premium Thermodynamics Benzene Temperature
Determination of rate of photosynthesis INTRODUCTION Photosynthesis is the major process by which light from the sun is captured by plants‚ algae and some bacteria to produce energy. It is a process in which light energy is converted into chemical energy which is then stored in sugars. Photosynthesis occurs in two stages‚ light-dependant reactions and light-independent reactions. In light-dependent reactions the chlorophyll traps light energy which is then used to excite electrons and split water
Premium Photosynthesis Oxygen
One says that success can always be earned through hard work‚ determination‚ and putting in a good effort. For example‚ it can be said for athletes that play a sport. Coach’s always preach practice and more practice for one to improve and better their skill. However‚ I would like to recommend Malcolm Gladwell’s book‚ Outliers‚ as one of the five finalist for the National Book Award because it gives tremendous insight and removes a sometimes negative connotation to the word “Outlier”.Stating that
Premium Malcolm Gladwell A Great Way to Care Blink
Luck and success "Genius is 99% hard work and 1% Luck‚" this is a well-quote from Einstein. People have different opinion about that how success comes. Some people believe that success is being for luck‚ others think it is because of hard work. Personally‚ I believe that luck has nothing to do with success. Success is a result of our preparation‚ hard work and experience. Even the ideal conditions that led to success are a product of our preparation and work. Bill Gate’s success with the
Free Incandescent light bulb Thomas Edison Invention
Complexometric Determination of Water Hardness Lab Report Introduction: In this lab the use of disodium salt of EDTA is used to determine the concentration of M^2+ metal ion impurities in hard water by chelometric titration. The indicator Eriochrome Black T will help detect when you EDTA has completely chelated the metal impurities. Chemical Principle: A complex ion consists of a metal ion with Lewis bases attached to it. These Bases form strong covalent bonds with the central complex
Premium Calcium Water Hard water
The Measure of Success “What do you want to be when you grow up?” is a familiar‚ yet complex‚ question that every child at some time or another has been asked. As a child‚ it is essentially simple to decide what to be; but as that child grows up his or her ideas and passions change. Passion is what drives people to further their education. Everyone has a dream about what their career might look like once they reach adulthood. It is ultimately what we decide to do with our life that determines
Premium Critical thinking Education Thought