Stoichiometry is a section of chemistry that involves using the relationships between reactants or products in a chemical reaction to determine the desired quantitive data. 4. Using the balanced chemical reaction between Sodium carbonate and Calcium Carbonate given in page 92 of your lab manual (first paragraph of procedure), find the mass of Sodium Carbonate (in grams) needed in reaction? Na2CO3(aq)+CaCl22H20(aq)-CaCO3(s)+2NaCl(aq)+2H2O Date:_____3/30/2015____________ Name______Chloe Flake______________ 1. Title: 1pt Stoichiometry Of A Precipitation Reaction 2.
The PepsiCo Company stated in 1965 when founder Donald Kendall, president of Pepsi-Cola and Heman W. Lay, chairman of Frito-Lay merged the companies together. Founder Caleb Bradham, a pharmacist from North Carolina started the Pepsi-Cola brand in the late 1890s. He would sale his cola out of his drugstores, a formula that he created on his own. “Brad’s drink was made of carbonated water, sugar, vanilla, rare oils, pepsin and cola nuts. The company renamed its name in 1898 and trademarked itself on June 16th, 1903.
To get accurate result, this titration process are repeated for another two times. The entire procedure by which we obtain the molarity of a solution of one substance (NaOH) from an accurately known amount of another substance (KHP) is called standardization. The average molarity of the sodium hydroxide solution will be used in the next experiment. The second experiment is conducted to determine the molarity of acetic acid and mass percent in vinegar. 100mL of distilled water was added to 10mL of vinegar and followed by 1mL of NaOH was pour into the solution.
Isolation of Caffeine from Tea CHEM243A 2-23-11 Abstract: The purpose of this experiment was to isolate caffeine from a tea bag. Once isolated, the caffeine was purified using sublimation. The percent recovery was calculated to be 83.3%. The melting point of the original substance was 51ºC-139ºC. Since it was inaccurate, the melting point of another group’s sample was recorded.
Complete the table below by identifying two ways of providing support before, during and after a business event. Before | During | After | 1. Sending out invites to those who need to attend. | 1. Taking notes making sure all is documented ready for possible word documents to follow after event.
Late papers will be penalized 10 pts per day. Papers with less than 1475 words will be penalized. See rubric for more requirements. You may complete this assignment in several ways. You may base it solely on Dreiser’s interpretation, you may focus on one or more characters to illustrate your point, or you may do a mix of both.
All sections should be headed as indicated in each part with your own personal information built in. This information will be learned and developed throughout the semester. This project must be typed, spell/grammar checked and submitted by: TBA This project will be worth 100 points and will fulfill part of your exam grade. Part 1: Identifying health inhibiting behavior 1. My health inhibiting behavior that I would like to change is: 2.
Pepsi is a carbonated soft drink produced and manufactured by PepsiCo. The drink was first made in the 1890s by pharmacist Caleb Brad ham in New Bern, North Carolina. The brand was trademarked on June 16, 1903. There have been many Pepsi variants produced over the years since 1898. In 1893--Caleb Braham, a young pharmacist from New Bern, North Carolina, begins experimenting with many different soft drink concoctions; patrons and friends sample them at his drugstore soda fountain with the name of "Brad's Drink.
PepsiCo’s soft drink portfolio also consists of Miranda and 7Up along with Pepsi. The market share of each of the company is more or less the same, though there is a conflict in the estimates quoted by different sources. The major ingredient in a soft drink is water. It constitutes close to 90% of the soft drink content. Added to this, the drink also contains sweeteners, Carbon dioxide, Citric Acid/Malic acid, Colors, Preservatives, Anti Oxidants and other emulsifying agents, etc The Indian soft drinks market is not under any regulation.
DC (NF/DJ) 27049/4 © UCLES 2011 [Turn over www.XtremePapers.net 2 Answer all the questions in the spaces provided. For Examiner’s Use 1 Ethanoic acid can be reacted with alcohols to form esters, an equilibrium mixture being formed. CH3CO2H + ROH CH3CO2R + H2O The reaction is usually carried out in the presence of an acid catalyst. (a) Write an expression for the equilibrium constant, Kc, for this reaction, clearly stating the units. Kc = units ................................................. [2] In an experiment to determine Kc a student placed together in a conical flask 0.10 mol of ethanoic acid, 0.10 mol of an alcohol ROH, and 0.005 mol of hydrogen chloride catalyst.