problems in your lab notebook. Be sure to specify the knowns & unknowns‚ the formulas used‚ show your work with labeled units and round you’re answers to the appropriate significant figures. 15-1 Molarity Problems: (M = moles/ liter ) 1. What is the molar concentration of a 415 ml solution containing 0.745 moles of HCl? (A: 1.80 M HCl) 2. What is the molar concentration of an acetic acid (CH3COOH) solution containing 3.21 moles in 4.50 liters? (A: 0.713 M) 3. How many moles
Premium Water Concentration
ANALYSIS AND DISCUSSION Toward the start of my examination I was speculation to break down just 1% centralization of Sodium Bicarbonate in water‚ yet because of a few reasons my examination got put off and till then there was change in the temperature outside because of which I needed to build the fixation. The second analysis gave me sure results‚ yet in the first I never felt that the relocation change that would happen will be so less. The room temperature was one of our reliant variables‚ on
Premium Water Nuclear power Oxygen
Solving systems of linear equations 7.1 Introduction Let a system of linear equations of the following form: a11 x1 a21 x1 a12 x2 a22 x2 ai1x1 ai 2 x2 am1 x1 am2 x2 a1n xn a2 n x n ain xn amn xn b1 b2 bi bm (7.1) be considered‚ where x1 ‚ x2 ‚ ... ‚ xn are the unknowns‚ elements aik (i = 1‚ 2‚ ...‚ m; k = 1‚ 2‚ ...‚ n) are the coefficients‚ bi (i = 1‚ 2‚ ...‚ m) are the free terms
Premium
Acetylsalicylic Acid (Aspirin) Synthesis Telow‚ AJV Sumicad‚ CJ‚ Tavanlar‚ EMMT‚ Chem 40.1‚ Institute of Chemistry‚ University of the Philippines Los Baños I. Introduction Organic synthesis is the process where a desired organic compound is constructed or prepared from commercially available materials. The objective of organic synthesis is to design the simplest synthetic routes to a molecule. Aspirin‚ also known as acetylsalicylic acid is as salicylate drug often used as analgesic
Free Aspirin Acetic acid Carboxylic acid
AMINO ACIDS BY MEANS OF TITRATION CURVE ABSTRACT The aim of the experiment was to identify an unknown amino acid through acid-base titrations which was prepared in water to form an acidic solution. Each group prepared unknown amino acid hydrochloride. The pre-prepared basic solution was slowly added to the amino acid solution and pH change was closely observed using the pH meter. During these titrations the amino acid converted from cation to zwitterion to anion; zwitterion is an amino acid with
Premium Amino acid PH Acid
Measurement of the Heat of Neutralization of an Acid CHM 152IN CRN: February 5‚ 2000 I. Purpose of Experiment The purpose of this lab is to measure the heat released in the reaction of an acid and a base. This will demonstrate an enthalpy reaction‚ showing energy being released. II. Chemicals and Equipment The following chemicals and equipment will be utilized for the experiment: |Chemicals |Equipment
Premium Water Energy Chemical reaction
ETHERS Classification of Ethers: Symmetrical ethers – two groups attached to O are identical Ex. CH3CH2OCH2CH3 – diethyl ether Unsymmetrical ethers – two groups attached to O are not identical Ex. CH3CH2OCH3 – ethyl methyl ether Physical Properties of Ethers: Ethers have much lower boiling points compared to alcohols of comparable MWs. BPs of ethers increases with increasing MW. BPs of isomeric ethers increase with increasing alkyl chain length. BPs of ethers are about the
Premium Nucleophile Alcohol Diethyl ether
The reason why the Drake Equation is not a successful science is because it would be impossible to calculate some of the elements in the equation. The elements would take too long to get an accurate sample to give a scientifically sound explanation. For instance how would you calculate fi (the fraction of intelligent life forms)‚ how do you define intelligent? Is intelligent like you and I‚ is it like a bird or a rat‚ could it be a plant? There is no way to truly determine what counts and doesn’t
Premium Scientific method Extraterrestrial life Theory
Abstract The objective of this experiment was to observe multi-step purification of benzoic acid after performing the extraction from a mixture containing benzoic acid‚ cellulose‚ and methyl orange. Recrystallization was done to remove impurities from the sample. The amount of BA recovered during recrystallization is much less than the extracted amount of BA. The difference between the pure and impure samples was observed by comparison of melting points. It was found that impure samples will have
Premium Solubility Chemistry Temperature
Melissa Carrithers AP Chemistry period 6 2-11-15 Determination of Ka of Weak Acids Purpose: The purpose of this lab is to find the strength of weak acids by determining the equilibrium constants for their ionization reactions in water. Is to use their measured pH values to calculate the pKa for the two unknown weak acids thus determining their identities. Hypothesis: If we neutralize a solution that contains a weak acid by adding a strong base to the solution‚ then the ions will be isolated and
Free PH Sodium hydroxide Acid