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 of KI are present in 125 ml of 0.500 M KI? (A: 0.0625 mol KI) 4. How many moles of ammonia (NH3) are present in .360 L of 2.13 M NH3 solution in water
Premium Water Concentration
will show a colour change. After that record the initial reading of the burette and making sure that all your burette readings must be to an appropriate precision. Titrate the contents of the conical flask by adding to it 0.100 mole dm3 hydrochloric acid from the burette. Add the solution slowly. Swire the flask gently to mix the contents at the end indicator turns as define red colour. This is the end point of the titration. Record the final burette reading in your table of result. Repeat the titration
Premium Chemistry Water Solvent
Key Scenes and Techniques: In the scene where Sandy tells Justin of Tessa’s death Sandy is shown in strong shadow and Justin is well lit and appears in a sunny patch‚ watering his plants. This creates a sense of foreboding and makes Justin seem like the good guy or hero of the piece. Dinner Party/ Drinks with Sir Bernard Pellegrin and Dr Joshua Ngaba‚ Kenya Health Ministry Pellegrin - “You’ve met Dr. Ngaba‚ have you?” Bluhm - “Yes‚ at the opening of a new state-of-the-art clinic...without
Premium Pharmaceutical industry
Therefore‚ the experiment was performed to conduct quality control analysis on two commercial products to determine the amount of acid or base active in these two products and then compare the results to those of the manufacture. This was done through the preparation of standardized acid solution and standardized base solution‚ and through titration. The purpose of titration was to determine the concentration levels of the commercial products being used.
Premium Nutrition Food Health
787122 Received 3 October 2002/Accepted 21 November 2002 Downloaded from http://aem.asm.org/ on June 6‚ 2013 by UNIVERSITY OF DELHI Despite their commercial importance‚ there are relatively few facile methods for genomic manipulation of the lactic acid bacteria. Here‚ the lactococcal group II intron‚ Ll.ltrB‚ was targeted to
Premium DNA Gene expression RNA
Acid-Base Titrations A Titration of Potassium Hydroxide Phthalate and Sodium Hydroxide Hanna Piper Department of Chemistry‚ SUNY College at Brockport‚ Brockport‚ NY 14420 Chemistry 205.06 Abstract Titrations are used to find the molarity of an unknown solution. A titration begins with an analyte and titrant being used to measure the unknown molarity of the analyte. In the following experiment‚ sodium hydroxide was used as the titrant and potassium hydroxide phthalate was used as the
Premium Sodium hydroxide Titration Chemistry
Acids and Bases Shane Purpose- To study the relationship between pH and metabolism. 10/21/13 Materials- see attached Per. D Biology Procedure- see attached Data and Results- see attached Theory- PH stands for the power of hydrogen. People refer to the pH scale as a tool for finding out if a substance is acidic‚ basic‚ or neutral. This scale goes from zero to fourteen. The number seven is neutral. Any number higher than seven on this scale is basic. Any number lower is acidic
Premium PH Acid PH indicator
Senior High School Topic : Solubility product of Constant (Ksp) Grade : XI Semester : 2 Time Allocated : 30 minutes I. Competency Standard Understanding properties‚ measuring method and applying of acid base solutions. II. Basic Competency Predicting precipitation from a reaction based on solubility and solubility product constant principle III. Indicator 1. Explain the meaning of Solubility Product Constant (Ksp) 2. Write down the Solubility Product
Premium Solubility Sodium chloride
Date Performed: January 10 & 15‚ 2013 Spectrophotometric Determination of the Equilibrium Constant of a Reaction R.J.V. Ortega and J.C.V. Gatdula Institute of Chemistry‚ College of Science University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Received January 22‚ 2013 ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ABSTRACT -------------------------------------------------
Premium Chemical equilibrium Concentration Chemistry
Lysergic Acid Diethylamide (LSD) was created by chemist Albert Hofmann in Switzerland while attempting to create a blood stimulant. The drug was utilized for psychological experiments for many years and this even led to the military experimenting with it as a biological weapon in the 1960’s. During the 1960’s‚ as a result to the wide dispensing of the drug for experimental purposes‚ it wound up being the “…counterculture used the drug to escape the problems of society…” (LSD: A Short History). Due
Premium Drug addiction Cannabis Heroin