Taki Simadiris p1 Brierly Post-lab a. If you did not wash all of the Calcium Carbonate out of the beaker and into the filter during step 5‚ would your percent yield be larger or smaller? If you do not wash all of the Calcium Carbonate out‚ then the percent yield would be smaller because there is enough calcium carbonate left in the beaker that would have attributed to the final yield. b. If you used tap water instead of DI water what do you think would happen? Why? If you used tap water‚ the coffee
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Experiment 3: Cryoscopic Determination of Molecular Weight Aim: The primary objective of the experiment is to calculate the total molecular mass of the compound benzoic acid in a predetermined amount of cyclohexane. Introduction: One of the key concepts in this experiment is the term freezing point depression. The definition of this phrase is that when a solute is dissolved into a solvent‚ their collective boiling point will be less than that of the original boiling point of the solvent. This incidentally
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Determination of KHP – Acid - Base Titration For determining purity of unknown KHP‚ acid – base titration was used. Molarity of titrant in this case NaOH was standardized as 0.04958(±0.00011) M. Purity of unknown KHP was calculated as 35.88(±0.16) %. • Introduction Acid – base titration is typical method of determining unknown figures. Acid – base titration means that by using neutralization between acid and base. Abrupt changing of pH says whether procedure is done or not. pH indicators
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JAMMU AND KASHMIR PUBLIC SERVICE COMMISSION RESHAMGHAR COLONY‚ BAKSHI NAGAR‚ JAMMU. (www.jkpsc.org) NOTIFICATION NO. PSC/Exam/2010/15 D A T E D: 25.01.2011 It is hereby notified for the information of all concerned that the J&K Combined Competitive (Main) Examination‚ 2010 shall be conducted as per following schedule:Date/Day (1) 03.03.2011 (Thursday) 06.03.2011 (Sunday) 08.03.2011 (Tuesday) 09.03.2011 (Wednesday) Forenoon Session 10.00 A.M. to 01.00 P.M. (2) GENERAL STUDIES – PAPER I GENERAL STUDIES
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BRONSTED-LOWRY ACIDS AND BASES 1. The Bronsted-Lowry definition There are many definitions of acids and bases in existence‚ but the most useful one is the Bronsted-Lowry definition: An acid is a substance which can behave as a proton (re presented as a hydrogen ion‚ H+) donor. Any substance which contains hydrogen bonded to a more electronegative element can thus behave as an acid: HCl == H+ + Cl- H2SO4 == H+ + HSO4- A base is a substance which can behave as a proton acceptor. Any
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is “‘Ka Moa`e” and it means “The Tradewinds”. I chose this song because ever since I was young I loved the Big Island‚ and it reminds me of how much I miss it there. I like the line that explains the excitement of being thrilled by a loves voice. In Hawaiian the line says “Ilihia ho`i au a i ko leo‚ I ka pane `ana mai me ka nahenahe.” Translated in English it means “I will be thrilled by your voice‚ And your soft answers. Ka Moa`e: The Tradewinds `Auhea wale `oe e ka Moa`e
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Cells rely on processes such as cellular respiration and fermentation in order to produce ATP through a series of steps. There are two different types of fermentation: lactic acid fermentation in humans and alcohol fermentation in yeast and bacteria. All of these processes synthesize ATP‚ however‚ unlike respiration‚ both types of fermentation occur when oxygen is not present. In addition‚ each process undergoes a critical first
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Oxidation of a Secondary Alcohol Using Hypochlorite October 8‚ 2013 Jennifer Karigan CHEM 2081-004 Jonathon Musila Introduction The purpose of the experiment was to oxidize and identify an unknown alcohol using hypochlorite‚ or household bleach. During the experiment‚ the bleach oxidized the secondary unknown alcohol into a liquid ketone which was distilled or boiled to find the boiling point and then identified using a chart of unknown identities
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Kakite Bro by Willie Davis A moment of silence. Heads bowed and tears quietly spill to the floor. Hupe strings and runs and is wiped away. ‘Aue!’ screams your heart. ‘Aue!’ scream your memories. But all that can be heard is the shaking of your body as you sob quietly. I battle inside. I scream. ‘I want to wail.’ ‘Not here‚ Tama.’ ‘I want to sing. It’s my way‚ it’s the way Maori have always done it.’ ‘Not here‚ boy.’ ‘Why Dad?’ ‘We’re different‚ boy. They have their own way – we have ours
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Experiment #6: Colorimetric Determination of pH Almira‚ Faerie Carleen Lucile L. Gallardo‚ Charlotte O. Group #6‚ Chemistry 18.1‚ MHEG1‚ Ma’am Arlou Angeles September 23‚ 2013 I. Abstract The acidity of the four unknown solutions were determined with the use of colorimetry using McIlvaine’s buffer solutions varying in proportion of its constituents (disodium phosphate and citric acid). These buffer solutions were subjected to the addition of corresponding pH indicators and the variation of
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