1. | | | What is the pressure‚ in atm‚ of a tank of gas with a regulator that reads 1250mmHg? | | | Student Response | Correct Answer | A. | 1.64 | | B. | 490 | | C. | 1.79 | | D. | 0.608 | | E. | 1.25 | | | Score: | 0/1 | | | 2. | | | A 147.9-L sample of dry air is cooled from 88.0°C to 22.1°C while the pressure is maintained at 2.85 atm. What is the final volume in L? (Do not type the units.) | | | Student Response | Correct
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Entropy: Entropy is a measure of the disorder of a system. Entropy comes from the second law of thermodynamics‚ which states that all systems tend to reach a state of equilibrium. The significance of entropy is that when a spontaneous change occurs in a system‚ it will always be found that if the total entropy change for everything involved is calculated‚ a positive value will be obtained. Simply‚ all spontaneous changes in an isolated chemical system occur with an increase in entropy. Like enthalpy
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Marie Alessandra T. Reyes Group 4 18L Quantitative Determination of the Acidity of Soft Drinks I. Introduction Soft drinks are well known beverages among the young that are consumed mostly for pleasure. These beverages normally contain flavoring‚ sweeteners coloring‚ carbonic acid and acids. Carbonic acid and acids play an important part in the formulation of soft drinks. They enhance the flavor and give a pleasant refreshing ’lift ’ to the drink. The type of acid used can even affect the palatability
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1 Class XII: Chemistry Chapter 1: The Solid State Concept 1. Solid: Solid is a state of matter in which the constituting particles are arranged very closely. The constituent particles can be atoms‚ molecules or ions. Properties of solids: a. They have definite mass‚ volume and shape. b. Intermolecular distances are short and hence the intermolecular forces are strong. c. Their constituent particles have fixed positions and can only oscillate about their mean positions. d. They are incompressible
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with this optional observation lab was a great experience overall‚ just as I had expected it to be. I was much more interested in participating in the observations versus sitting in a classroom every week and attending the labs like in 1010. The first event that I attended was the courtyard telescope setup on January 31st‚ in which we were observing a couple of different provinces and sunspots located about 10 o’clock region located directly on the sun. (See lab book for illustration.) We were
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colorless colonies. Multiple medical experiments are credited towards transformation‚ especially ones involving cancer and the transformation of normal cells to neoplastic and cancerous cells. Introduction The general purpose of the Transformation Lab was to observe the difference in bacterial growth under differing media conditions to help understand the process of transformation and how it contributes to the life of living organisms. "Transformation" is what occurs when a cell receives and expresses
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that changed the world Captured in time Overexposed Underexposed Puzzled Digitally altered One too many filters Family portrait Procrastination Who is that guy in the background? If I start here If I end here Nobody panic Everybody run Paper airplanes All things come to an end All things start somewhere Love letter I think it was a record year for… Arrival Departure A mission A hazard A venture A speculation Melt Over Under There and back again Smell Sound Taste Lost
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indicated by a very pale pink color. To calculate the molarity of NaOH‚ the following equation was used MNaOH x VNaOH = MKHP x VKHP therefore the molarity was .125 M. INTRODUCTION This lab experiment covers the preparation of standard solution and the acid/base titration. The first part of the lab is to prepare a standard solution of Potassium hydrogen per. A standard solution is a solution of known concentration‚ in which it is prepared using exacting techniques to make sure that the molarity
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------------------------------------------------- I. ABSTRACT The common ion effect occurs when a given ion is added to an equilibrium mixture that already contains that ion‚ and the position of equilibrium shifts away from forming more of it. This paper is a follow-up of the experiment which aims to determine the common-ion effect on the extent of ionization of an electrolyte and the solubility of a slightly soluble substance‚ and to determine the type of substance with comprise buffer solutions and
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ca/mycourses/students/start/ Select General Chemistry 1 - Fall 2011 - CHEM-110-001 - Cross-Listed If you are having trouble logging on to WebCT‚ please contact IST Customer Services (ICS) (514) 3983398 or by e-mail from the WebCT page: http://www.mcgill.ca/webct/students/help/ Please do NOT email the lecturers as they will not be able to help. Lectures: CHEM 110‚ Section 1 Monday‚ Wednesday and Friday 10.35 to 11.25‚ Leacock 132 CHEM 110‚ Section 2 Tuesday‚ Thursday 11:35-12.55‚ Frank Dawson Adams
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