Acetylsalicylic acid is the active pharmaceutical ingredient in aspirin and can be synthesized by the esterification reaction of salicylic acid and acetic anhydride in the presence of an acid catalyst. An esterification reaction is when an acid is converted into an ester by combining with an alcohol and removing a water molecule. When heating the salicylic acid mixture in the warm water bath‚ the mixture should be removed from the bath within 8 minutes‚ to reduce the chance of the acetylsalicylic acid decomposing
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Sample Questions 1. In the chemical formula for ammonia‚ NH3‚ what does the subscript 3 represent? (a) the number of ammonia molecules that will bond together (b) the number of nitrogen atoms in each molecule of ammonia (c) the number of nitrogen and hydrogen atoms in each molecule of ammonia (d) The number of hydrogen atoms in each molecule of ammonia 2. The diagram above shows a block from the periodic table. The number six represents the following consumers eats only producers? (a) atomic
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a small amount of sodium bicarbonate with a small amount of acetic acid will create enough carbon dioxide to inflate the bag so Humpty will have enough cushion to protect him from the fall. Procedures: Materials: * Electronic balance * Graduated cylinder * Saftey goggles * One egg (Humpty Dumpty) * Paper lunch bag * 50cm masking tape * 1.775g sodium
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final compound which I am going to look at is 4-aminobenzenecarboxylic acid. The compound is also known as 4-Aminobenzoic acid. The molecular and structural formula of the compound is C7H7NO2 which means that the compound consists of seven carbon atoms attached to seven hydrogen atoms along with one nitrogen atom and two carbon atoms attached as a carbon-oxygen double bond. The displayed formula for the 4-aminobenzenecarboxylic acid compound is shown and it shows the formula in a ring form therefore
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is the name of the port used by an Ethernet cable? What is the name of the port used by a dial-up modem? RJ-45‚ RJ-11 9. If you want to upgrade your 100BaseT Ethernet network so that it will run about 10 times the current speed‚ what technology would you use? Gigabit Ethernet 10. What is the maximum length of a cable on a 100BaseT network? 100 meters or 328 feet 11. What does the 100 in the name 100BaseT indicate? The transmission speed of the network which is 100 Mbps.
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Name: ______________________________________________________ Period:_____ Chapter Review: 10 Mendel & Meiosis College Biology 1. An organism that is true breeding for a trait is said to be (a) homozygous (b) heterozygous (c) a monohybrid (d) a dihybrid 2. At the end of meiosis‚ how many haploid cells have been formed from the original cell? (a) one (b) two (c) three (d) four 3. When Mendel transferred pollen from one pea plant to another‚ he was ___ the plants. (a) self pollinating
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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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Synthesis of 4‐methylcyclohexene via Dehydration of 4‐methylcyclohexanol Heston Allred TA: Christine Woolley Thursday 1:05-4 pm Laboratory Experiment #10 Abstract 4-methylcyclohexanol was synthesized to 4-methylcyclohexene using dehydration. 4-methylcyclohexanol was heated to reflux and the subsequent distillate (4-methylcyclohexe) was collected. It was then purified using sodium chloride to separate products and an anhydrous solid was then added and filtered
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Percent Acetic Acid in Vinegar Introduction: Acetic acid is reactive when combined with calcium carbonate. In this lab‚ we will use vinegar for its acetic acid and egg shells for their calcium carbonate. Marketable vinegar differs in its acetic acid concentration from 4-6%. Calcium carbonate reacts with the acetic acid in vinegar to produce carbon dioxide‚ water‚ and calcium acetate as represented by the equation: CaCO3 + 2HC2H3O2 CO2 + H2O + Ca(C2H3O2)2. The calcium carbonate reacts with
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The Mammalian Urogenital Lab Questions 1. The urine needs to be stored in egg-laying animals so that the fetus is not trapped in pools of urine inside of the egg. This keeps the urine separate from the fetus and its nutrients. 2. The fetuses of mammals that bear their young alive do not need a urine sac and does not form urine because all of the fetuses waste is taken out through the mother either through the placenta or the umbilical cord. 3. The testes are separated from the abdominal
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