of energy. We must add 1 calorie of heat to increase the temperature of 1g of water 1 degree Celsius. Our bodies expend about 1J of work with a single heartbeat. For convenience sake‚ both the Joule and calorie are often expressed in multiples of 1000. We speak of the kilojoule (kj): 1 kJ = 1000J and the kilocalorie (kcal). 1 kcal = 1000 cal Thus we must add 4.184 kJ of heat to raise the temperature of 100g of water 10 degrees Celsius. Chemical Reactions and the Production of Energy Heat and
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Reuse‚ Revival‚ and Recarving: Ancient Granite Columns in Renaissance Rome Michael J. Waters Worcester College‚ University of Oxford michael.waters1@gmail.com Architects of the Italian Renaissance often quoted ancient architectural details in modern designs as an act of reference and revival. While historians frequently note this common method of transumption‚ the creation of all’antica architecture through the use of ancient building materials has gone largely ignored. This paper argues that the
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Title Soda Ash: Great for the economy but detrimental to the body; So why is it involved in everyday life? Abstract Sodium carbonate‚ Na₂CO₃‚ commonly known as soda ash is used in the manufacturing of many economically important products such as the manufacturing of glass‚ chemicals‚ paper and detergents. Since sodium carbonate has a strong base‚ it is commonly used to neutralize acidic effects. Soda ash has a high pH in concentrated solutions and can irritate the eyes and skin as well
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Experiment 1: Mixtures Aim: To develop an understanding of different types of mixtures including solutions and examine the different solubilities of some solutes and two solvents: water and ethanol Equipment Bunsen burner Tripod Gauze mat Beakers (2 x 100mL) Boiling chips Distilled water Sodium chloride Sodium chloride (solid) Glass rod Measuring cylinder (25mL) Ethanol Watch glass Thermometer 100% Orange Juice 100% Apple Juice 100% Prune Juice Solder Fruit Scone Charcoal Copper(II) Chloride Magnifying
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regulator‚ and as the osmotic gradient increased between blood and sea water‚ additional work would be necessary in order to maintain the gradient.” Experimental Design: The independent variables
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Coconut Water Wax A Breakthrough in Fruit Preservation ABSTRACT This study utilized coconut water to produce a wax preservative for fruit and other foodstuff. Different fresh fruits were collected and assigned to four different treatments: * Treatment I (Control): fresh fruits without anything done * Treatment 2: fruits soaked in coconut water for 10 minutes * Treatment 3: fruits covered with coconut water wax * Treatment 4: refrigerated fruits The fruits used were oranges
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In this lab we tested the purity of water by looking for the chemicals free chlorine‚ chloride‚ sulfate‚ nitrate‚ copper‚ total hardness‚ iron‚ hydrogen sulfide‚ lead‚ pesticides‚ pH‚ total alkalinity‚ and total chlorine inside a water sample. The chemicals that produced a 0.0 result meant that there was no trace of that chemical inside the sample. The chemicals not found were copper‚ hydrogen sulfide‚ free chlorine‚ lead‚ iron‚ pesticide‚ and total chlorine. As a class we found the results of
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In this experiment‚ we planted bean plants and put stress on them by rubbing them a certain amount of times a day. This was to see how they might survive in a windy area or in an environment where they might constantly be touched or moved around. The bean plants were
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flame spectra bands for each water sample. Use the Flame Spectra Chart and Symbol table below to identify the elements (metals) in the different water samples. Symbol | Name | Cd | Cadmium | Li | Lithium | Na | Sodium | K | Potassium | Rb | Rubidium | Cs | Cesium | Hg | Mercury | Ne | Neon | Sample | Number of Bands | Colors Present in Spectrum | Probable Elements In Sample | Spring Water Sample | 8 | Grey‚ aqua‚ yellow‚ red | Li‚ Cd | Bottled Water Sample | 2 | Yellow | Na
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organisms would not exist without water. Within the human body the majority of biological reactions require water to take place. Although it is possible for human survival without nutrients for up to several weeks‚ without water humans would die in a matter of days. In the human body‚ water makes up 60-70% of adult body weight. At cellular level water makes up between 70-95% of the mass of a cell. The amount of water in the human body is balanced. This balance is between water obtained from liquids consumed
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