determined to be most suitable for both compounds. Using 100% ethanol as the solvent for recrystallization‚ the purified compounds were obtained in the form of crystals. Table 2 below summarises the primary data of the 2 purified compounds. Table 2: Primary Data of Purified Compounds Neutral Compound Acidic Compound Appearance Yellow crystals White powder Mass obtained (g) 0.6844 0.5893 After obtaining the purified compounds‚ their melting points are then determined. The experimentally obtained
Premium Chemistry Solvent Solubility
I. DATA AND OBSERVATIONS Table 1. Description of reagents. Reagents Description Salicylic acid Fine powdery white solid crystals 95% ethanol Clear colorless liquid Acetyl chloride Clear colorless liquid with gas escaping from container FeCl3 Clear colorless liquid Commercial aspirin Fine powdery white solid crystals I2/KI Deep black liquid KMnO4 Brownish liquid Phosphoric acid Clear colorless liquid Table 2. Preparation of Aspirin. Description Salicylic acid + Acetyl
Premium Solid Primary color Acetic acid
Appearance of rock salt crystals Before crushing: Jagged edges‚ very few smooth surfaces‚ size was 9mm x 6mm‚ cubic crystal shape with ridge like features. Color was opaque‚ borderline grey with milky white indentations. After crushing: Some pieces appeared transparent‚ shinny and became individual crystals. Wet: The drops on the crystals formed a dome. No movement of H2O. After a few minutes smaller crystal were absorbed by H2O with some bubbles at bottom while larger crystals were slowly beginning
Premium Scientific method Sodium chloride Water
Transport Phenomenon (Electrical and Thermal) in two allotropic forms of Carbon (Diamond and Graphite) Graphite and Diamond both are formed from carbon (two allotropic forms of carbon). Though they have similar constituent element‚ they differ a lot in their properties. Diamond is a good thermal conductor but a bad electrical conductor‚ while graphite is a bad thermal conductor but a good electrical conductor. This is one example of their property difference. The difference in their properties
Premium Diamond Atom Chemical bond
Module A Lesson 2: Famous Gemstones and Jewellery Diamond Encrustations British Crown Jewels Koh-I-Noor diamond: (“Mountain of Light”) One of world’s largest diamonds The Cullinan Diamond: largest diamond rough ever found Hope Diamond Deep blue colouration Lack of internal flaws Shows VS1 clarity First sold to King Louis XIV Top ten diamonds by size Diamonds >10 carats = exquisite Diamonds >50 carats = possession of museum/wealth people Diamond >199 carats = not sold
Premium Mineral Corundum Color
Experiment #2: Stereochemistry of Alkenes and Molecular Modeling By: Nouhad Mokdad Section: 53 TA’s: Sheida and Ryan Mills Lab Partner: David Wilson Date of Experiment: October 7th‚ 2008 Purpose: The purpose is to study the difference between the stereochemistry of the two isomers‚ maleic and fumaric acid. The first part of the experiment called for the conversion of maleic acid into fumaric acid with the addition of a proton using the acid-catalyzed isomerisation‚ vacuum filtration‚
Premium Oxygen Chemical bond Carbon
the River” In the story of By the River‚ the author relates the love story between the young woman‚ Crystal Styan‚ and her husband‚ Jim Styan‚ in the terms of faith‚ responsibility and dream. After reading this story‚ I wonder that why Jim chose to leave and why Crystal still believed he will come back‚ even though she realized that her dream of the life with him would not come true. When Crystal was in grade ten‚ she gave up the opportunity of studying further and chose to live a wonderful and
Premium Wife Woman 2008 albums
Oracle Bones Oracle Bones were used for pyromancy‚ a branch of divination that has become a characteristic of ancient China‚ particularly the Shang dynasty. Pyromancy means divination by fire and comes from the Greek words ‘pyros’ meaning fire and ‘manteia’ meaning divination. Although historical records show their use around the world. Oracle bones are most commonly known for their use during the late Shang Dynasty [1600-1050 BC]‚ they were usually made from an ox’s shoulder blade (scalpula) or
Premium Neolithic Oracle Shang Dynasty
“nobody speaks it any more” (Crystal 2000). According to Colls (2009)‚ the size of language pool is over 7000‚ but by end of this century‚ it is estimated that 90% of those languages “would have ceased to exist”. The major factors which directly pose the increase of endangered languages are various‚ ranging from natural disasters‚ cultural homogenization and assimilation‚ policies made by governments (Hetrick 2014) and influence of dominate and mainstream culture (Crystal 1999). Within the discussion
Premium Linguistics Languages
Life For Me Ain’t Been No Crystal Stair Crystal Taylor‚ at the age of fourteen‚ gave birth to her son Daquan Drummond‚ on October 7‚ 1984. Crystal went into labor unexpectedly and prematurely. Little Daquan was born two months premature and weighed three pounds six ounces‚ born with a heart murmur and slight difficulty breathing. When Crystal was faced with the caseworker from social services‚ she realized that she would only be dismissed from the hospital with little Daquan‚ if the caseworker
Premium Foster care