Empirical and Molecular Formula | Key Concepts * Empirical Formula of a compound shows the ratio of elements present in a compound. * Molecular Formula of a compound shows how many atoms of each element are present in a molecule of the compound. * The empirical formula mass of a compound refers to the sum of the atomic masses of the elements present in the empirical formula. * The Molecular Mass (formula mass‚ formula weight or molecular weight) of a compound is a multiple of the empirical
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Introduction In these few years‚ molecular gastronomy has become a key topic and it is the new fashion for chefs to offer their customers. This is a new culinary trend called molecular cooking has been investigated as the most exciting development in haute gastronomy. Molecular gastronomy is refers to a modern style of cooking‚ which is a discipline practiced by both scientists and food professionals that studies the physical and chemical processes that occur while cooking. As well as it is the
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“Diffusion of Innovations” Assignment Ya-Chuen‚Yu (Jessica) 11/18/2012 Consumer Behavior MKT620 Term 1 2012-2013 I certify that I am the author of this assignment. Any assistance I received in its preparation is fully acknowledged and disclosed within this document. I certify that I have not received help from any unauthorized persons. I have cited any and all sources‚ both print and electronic‚ from which I have used data‚ ideas‚ or words‚ either quoted or paraphrased. My
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THE MOLECULAR BASIS OF INHERITANCE I. History A. Discovery of “transformation” – a change in genotype and phenotype due to the uptake of external DNA by a cell 1. Griffith 1920s did experiments with Streptococcus pneumoniae (p294 fig16.2) a. took two strains of S. pneumoniae‚ one virulent‚ one not b. heat killed virulent strain‚ then mixed them with the living nonvirulent strain c. living nonvirulent strain became virulent d. nonvirulent strain took on virulent strain’s DNA became virulent
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Abstract: The Preservative effect of brine at different concentrations on lettuce at tropical ambient temperature was examined. The effect of various concentrations of salt solutions on leaf surface and edge browning‚ texture‚ and colour were observed for five days. The experiment was laid out in a Complete Randomized Design (CRD) and each treatment repeated in triplicates including a control. Sensory qualities were examined by six panelists using a 5-point hedonic scale ranking. Results indicated
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The purpose of this lab was to determine the concentration of NaCl or sodium chloride that is isotonic to elodea cells. First off‚ what is osmosis? Osmosis is this huge net of molecules moving through semi-permeable membrane to high concentration to direction where everything becomes balanced. This brings us to what osmolality is. Osmolality is related to osmosis and we know that osmosis has something to do with water so that being said‚ osmolality is number of osmoles of solute per liter in solution
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My results to my findings to my brine shrimp experiment was started on 12-28-15‚ using 4 jars. Each jar contained water‚ salt‚ and brine shrimp eggs. I started by filling each jar with tap water and then adding salt. I added 1 TSP of salt and each jar added ½ TSP more of salt. In my experiment I noticed on the first day‚ 12-28-15‚ in all the jars the brine shrimp eggs were added to the 4 jars. Some observations I noticed were the eggs didn’t sink right away‚ they stayed on the surface for awhile
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[ print page ] Lab Report for HandsOn and Video Observation Labs Question How are cells affected by the movement of water? they expand Hypothesis (What do you think will happen to the egg after the three days? Be sure to give a reason for your hypothesis.) i think the shell of the egg will dissolve and the egg will expand in the liquid. Data and Observations Time (hrs) Observation s Circumference (cm) 0 its a raw hard egg 8cm 24 the shell of the egg has dissolved
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In 1947‚ experiments in which small quantities of Ca2+ ions were injected directly into the cell showed that an increase in intracellular calcium led to skeletal contractions. However it was not until the early 1960s when the way calcium ions were stored in cells became clearer thanks to work from Ebashi and Lipmann. (Burgoyne and Petersen‚ 1997). Calcium signalling determines whether or not a cell is activated. It is determined by calcium-ON and calcium-OFF mechanisms. Calcium-ON is responsible
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Investigation: How does the number of maggots in the mass affect the temperature of maggot mass and development of maggots in the mass? Abstract The aim of this investigation is to find a correlation between the number of maggots in the mass and the temperature of maggot mass. To find the correlation the different number of maggots in each mass was placed in (the isolated by glass beakers) polystyrene cups. The internal temperature of masses was obtained regularly every 10 minutes during 30
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