* can be observed (via change in color‚ smell‚ or (from the release of energy) in the form of bubbles or a change in light; * ------------------------------------------------- is irreversible (because a new substance was formed). QUIZ ANSWERS What is the term for the abbreviation for the name of a chemical compound that indicates the number of atoms of each element? c. chemical formula What is the term for matter having an indefinite composition and variable properties?
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Week 2 Lab |Step 1: First Year Costs | | Question 1: What would the first-year costs be to AML if it purchased the 10 used 20-foot containers? How long would it take to recoup the investment‚ assuming that the mushroom traffic continued? Based on 120 container shipments per year with 10% loads return or 12 containers‚ this would generate revenues equal to the associated cost.
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1L distilled water 1 x 400mL±5% glass beaker 2 x 500mL±5% glass beaker 1 roll of tape Ball-point pen Stirring Rod Procedure 1. Put on safety goggles. 2. Fill 2‚ 500mL beakers fully with the 1L glycerol. 3. Put a piece of tape on each 100mL graduated cylinder‚ and using the pen‚ label ‘10°C‚20°C‚30°C‚40°C and 50°C’‚ respectively Procedure for 20° condition 1. Pour 50mL of glycerin from one of the 500mL beakers into the graduated cylinder labeled ‘20°C’ 2. Take the thermometer and place it in the ‘20°C’
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groups. 5 major functional groups easily identified by IR spectroscopy: 1. C=O 2. C–O 3. OH 4. Phenols 5. C–H Instrument details Type of spectrophotometer: Nicolet 380 FT-IR spectroscopy‚ Nicolet Avatar 360 & Thermo Scientific iS10 FT-IR Spectrometer Type of radiation source: Methods of Sample Preperation Initially the plates were rinsed with ethanol‚ then dried with lint0free tissues. Next 1-2 g of benzoic acid were transferred to a mortar and a pestle was then use to grind
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20 9. Classic chemistry experiments Unsaturation in fats and oils Topic Organic chemistry‚ saturated and unsaturated fats. Timing 45 min. Description The students titrate different oils and fats mixed with Volasil against bromine water. Apparatus and equipment (per group) w White tile w Conical flask w Dropper pipette. (Use the type of teat pipette usually fitted to Universal Indicator bottles‚ that do not allow squirting – eg Griffin.) w Burette (filled with bromine
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| The Chemistry of Natural Waters | Chem 111 Sec 104 | | Hyunjung Hwang | 11/6/2012 | TA: Sarah Boehm‚ Group members: Rachel Hoffman‚ Dan Hirt | Introduction Water hardness is a major part of overall water quality that affects many industrial and domestic water users. Water is considered hard when there are high concentrations of the divalent cations Magnesium and Calcium; water hardness is considered as the sum of both the calcium and magnesium concentrations and expressed as
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Darwin C.Arthur Holmes D. Harry Hess Answer Key: A Question 2 of 22 4.0/ 4.0 Points The scientific community rejected the theory of plate tectonics because Alfred Wegener could NOT A.identify a mechanism to move the continents. B.disprove competing theories that were not accepted by scientists. C.find geologic similarities on the different continents. D.provide evidence that the continents were once joined together. Answer Key: A Question 3 of 22 5.0/ 5.0 Points In
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Chemistry 42 Course Syllabus Introductory General Chemistry Santa Rosa Junior College Spring 2013 Section 5618 - Course Information Lecture W‚F 7:30 – 9:00 PM (1999 Bech)‚ Lab W 9:00 – 12:00 PM (1948 Bech) Instructor of Record: Dr. Valeria Martinovic My office is in 1914 Bech. My Spring office hours are Mondays 10:00-10:30 PM‚ Wednesdays 7:00-7:30am‚ 9:00-10:30am‚ Fridays 7:00-7:30am. Leave a message at any time by e-mail at vmartinovic@santarosa.edu. Course description: Welcome
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Oumou Fofana Period: 1 Mrs. Furlong December 19‚ 2012 Gummy Bear Lab Question- If the percent of the concentration of a solution varies‚ will the amount of water gained or lost vary in a linear fashion? Hypothesis- If the concentration of a solution varies‚ then the amount of water lost or gain will not vary in a linear fashion Prediction- I think that the amount of water lost will not vary in a linear fashion. I think the water will vary like one gummy bear would lose 4 grams while
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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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