Lab 7: Determination of Water Hardness Using a Titrator Name: Kyndal Petrie Lab Partners: None Date of Experiment: July 19‚ 2013 Location: My house Course Number: Che112 Abstract: This experiment was to determine the hardness of the local water supply. I determined that from the 1mg of EDTA used to turn the mixture blue‚ that the water from my tap is moderately soft. Experiment and Observation: In this experiment I developed a familiarity with the concept
Premium Water Hard water Calcium
Martin Luther King Jr. : an Inspirational Hero Martin Luther King Jr. once said “ In the recesses of my heart‚ I am fundamentally‚ a clergyman‚ a Baptist preacher.” During a time of inequality and a time of need‚ Martin Luther King Jr. became a leader‚ a regional sign of hope‚ strength‚ and courage. People all around him looked to him as a leader‚ someone that would help change the way people looked at colored skin forever. King was not liked because he stood up and said that he didn’t like the
Premium African American Martin Luther King Jr.
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
The Determination of Keq for FeSCN2+ Joy Muthami February 12 2014 Introduction: The purpose of this lab was to calculate the equilibrium constant for the reaction of iron (III) ions with thiocyanate ions. The materials were first acquired then with the groups in the class each team was given a test solution to create and acquire information from then all the information was put together in order to save time. Specifically the group created test solutions #8‚ #9‚ and #10. Once the solutions were
Premium Chemical equilibrium Concentration
Being a part of a group of children having to adapt after being trapped on a island with no surrounding civilization is an unimaginable situation. However‚ William Golding shows just how terrifying it can be in his novel‚ Lord Of The Flies‚ by his use of symbols to represent hardships. The main symbols‚ which best portrays characteristics are the fire and the conch; symbols leadership and confidence. <br> <br>Ralph feels the need to create a better place as he attempts to get everyone home. Although
Premium
COMM210 July 15 Speaker Critique of George Lucas Inspirational Speech This video is in the speech held by Academy of Achievement. The Academy of Achievement is a Washington‚ D.C.-based non-profit organization that aims to bring high profile‚ successful people from various fields together with "young achievers" to inspire them to succeed. The speaker of this video is George Lucas‚ which is the creator of Star Wars and it is in Aug 12‚ 2013‚ Washington D.C. George Lucas talk about his life experience
Premium Personal life Happiness Talk radio
Chemistry Internal Assessment 2011 Candy Au Introduction The reaction between zinc and copper (II) sulphate is endothermic. If an excess of zinc powder is added to a measured amount of aqueous copper (II) sulphate in a calorimeter and the temperature change is recorded over a period of time‚ the enthalpy change of the reaction can be experimentally determined. Assumption 1. Mass of H2O in 100cm3 of CuSO4 solution is 100g 2. Specific heat of solution is 4.18 kJ kg-1 K-1 which is the
Premium
What is Beauty? Beauty can be seen differently by every single person in the world. Though people see beauty differently there are specific features the world universally sees as beautiful. There are a few scientific determinants of how attractive a person is and the society and culture a person lives in can contribute to how one person perceives beauty. To determine a person’s beauty it is up to someone to decide what the most important feature of a person is. A person may believe someone’s
Premium Obesity Body mass index Body shape
Objectives To study the quantitative relationship between the amount of reactants and products of a reaction ( that is how many moles of A react with a given mol of B). A known starting mass of magnesium and the measured collection of hydrogen gas will be used to determine the reaction stoichiometry and the valency of magnesium Introduction Stoichiometry is the study of the quantitative relationship between amounts of reactants and products of a reaction. Stoichiometry can be used to calculate the
Premium Chlorine Magnesium Hydrogen
Introduction: In this lab a total of six titrations are to be performed. Three of them will be done using a known Ca2+ solution‚ (1.000 g CaCO3 /L solution) and three of them will be done using an unknown solution obtained from the stock room. The objective of this lab is to determine the hardness of water‚ using the data collected from each titration performed with the unknown sample. Since the hardness of water arises from the presence of metal ions‚ we can use disodium salt of EDTA and the
Premium Calcium Water Hard water