Oil Precious Ahmed ID# 6463614 Section 07‚ Friday afternoon Lab experiment performed on: Friday‚ January 19‚ 2013 Lab report submitted on: Friday‚ January 24‚ 2013 Introduction Before the synthetic aspirin of today‚ salicylic acid‚ which is the important ingredient found in aspirin‚ was extracted naturally from methyl salicylate found in Wintergreen oil‚ which could be found in certain plants. The purpose of this lab experiment is to prepare salicylic acid from the natural starting material
Premium Salicylic acid Distillation Chemistry
NORTHERN CARIBBEAN UNIVERSITY DEPARTMENT OF BIOLOGY‚ CHEMISTRY and ENVIRONMENTAL SCIENCE LABORATORY MANUAL Instructor: Dr. M. Wilson CHEM401: BIOCHEMISTRY for NURSES Prepared by: Oreane Collins CHEMISTRY LABORATORY REGULATIONS AND SAFETY PRECAUTIONS Reference: http://www.sciencebyjones.com/safety_rules.htm Thanks to the Flinn Scientific Safety Rules for much of the below. General Guidelines 1. Conduct yourself in a responsible manner at all times
Premium Organic chemistry Carbon Alkene
Eggshell Lab Lab Set-Up: Materials: * pipette with pipette bulb * conical flask * 1 beaker * 1 molar sodium hydroxide solution * 2 molar hydrochloric acid solution * 1 funnel * 1 piece circular filter paper * crushed poultry eggshell * crushed farm eggshell * phenolphthalein * Distilled water * White tile * Paper tray * burette in burette stand * electronic scale Procedure: Step 1: Standardization of the NaOH solution using
Premium Calcium carbonate Titration Hydrochloric acid
CUMULATIVE MOLE WORKSHEET (Chemistry IB) 1. How many molecules are present in 27.0 g of distilled water? A. 2.7 x 1024 B. 1.5 C. 9.0 x 1023 D. 4.5 2. How many moles of carbon dioxide will be formed when 32.0 g of methane‚ CH4‚ burns completely in oxygen? A. 1.0 B. 2.0 C. 4.0 D. 8.0 3. How many oxygen atoms are present in 0.5 mole of pentahydrated copper(II) sulfate‚ CuSO4.5H2O? A. 2.5 B. 4.5 C. 3.0 x 1023 D. 2.7 x 1024 4. What is the total number of atoms in 3.0 molecules of propanone‚ CH3COCH3
Premium Oxygen Molecule Sodium hydroxide
AP Chemistry Period 1 Molecular Weight of a Condensable Vapor Lab Purpose: The purpose and objective of this lab was to find the molecular weight of a condensed vapor. Materials and Equipment: • Aluminum foil square (around 6cm on a side) • 125 mL flask • Barometer • 3 mL of unknown liquid • 200 mL graduated cylinder • 600 mL beaker • Pin • Balance (0.002g) • Bunsen Burner setup • Rubber band • Thermometer • Ceramic center wire gauze Procedure: 1. A 125 mL flask was obtained
Premium Chemistry Distillation Temperature
In this lab‚ the pH of flat sprite and a fresh sprite are compared two ways: one way was to record the pH directly with a digital pH probe and the other was to calculate the concentration through titration. Because the reaction is a neutralization reaction‚ the concentration of can be calculated if the concentration of is known. At the end of the titration‚ the moles of will equal the moles of and the pH is expected to be greater than 7 because the found in sprite is weak and is a strong
Premium Acid PH Acid dissociation constant
caused by given net force. Procedure: 1. Mount the pulley on one of the bars on the table‚ using a clamp. The pulley must overhang the table with the pulley disk in a vertical plane. Connect each end of a piece of string to a 50 g weight hanger and drape the string over the pulley. The string length should be such that‚ when one hanger hits the floor‚ the upper part of the other hanger is near the pulley‚ without touching the pulley. (You may find that the lab assistant has already set up the apparatus
Free Newton's laws of motion Force Mass
was soluble in water as well‚ but it had a very low melting point. All the substances except for sodium carbonate did not pass the requirements‚ and therefore sodium carbonate is the best possible substance. In order to prove this‚ I conducted a lab to determine the solubility‚ conductivity‚ and melting point of each substance. First‚ I made sure to obtain a Bunsen burner‚ evaporating dish‚ ethanol‚ the four substances‚ distilled water‚ conductivity probe‚ wash bottles‚ test tubes‚ and a beaker
Premium Water Melting point Sodium chloride
References 1.) Lehman‚ John. Operational Organic Chemistry‚ 3rd Edition. Experiment 4 (pp. 38-45; 680-687; 644-650)‚ Prentice-Hall‚ 1999. 2.) Laboratory Reference Manual: Experiment 3. Retrieved from: http://academic.reed.edu/chemistry/alan/201_202/lab_manual/expt_salicylic_acid/background.html 3.) Lab 5: Synthesis of Salicylic Acid. Retrieved from: http://academic.evergreen.edu/curricular/whatscookin/Lab%20five%20%20methyl%20saliclate.htm 4.) Handout: Synthesis of Salicylic Acid. Retrieved
Premium Chemistry Oxygen Organic chemistry
Hala Sughayar iLab: Week 1 BALANCE LAB Introduction The purpose of this week’s iLab is to find the weight of different objects and record my findings/data. I will record my data on a chart. My observations will determine why each scale has a different weight for the same object being weighed. The two techniques practiced here are direct weighing and weighing by difference. The skills required vary depending upon the kind of balance used. In this lab I will practice the techniques required
Premium Mass Weight Kilogram