area to volume ratio on the evaporation of water? Variables: - Independent: o Surface area in cm2 of the top most surface of water in the container. - Dependent: o Rate of evaporation in seconds. - Control: o Temperature of the room set at 25 degrees Celsius o Starting temperature of distilled water is at 25 degrees Celsius. o Volume of distilled water in the container at 100 mL. o Material of the containers is dark plastic (preferably black) as to not allow for light to penetrate the sides
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use as a timer) -2 big class cups Procedure: 1. Using the glass‚ fill it with water that is 25 degrees Celsius‚ use the thermometer to make sure the temperature is correct. 2. Have my phone ready to time how long it takes for the tablet of alka-seltzer to dissolve in the water. 3. Then‚ getting another cup‚ we have room temperature water. Then‚ we drop another alka-seltzer tablet into the water and time how long it takes to dissolve. 4. Repeating steps one and two with more water than
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* MACRO ANALYSIS 1. If we look the map of Peshawar we came to know that railway station‚ airport and other five hotels are within 30 minutes drive from the site‚ so the site is feasible on macro level. 2. There are two types of architectural styles in Peshawar. The architecture towards the main city is very detailed and classical while towards the new localities we observe modern structures of concrete. Since our site is located in the new locality of modern structures so the architectural
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calorimeter. 7. Measure the initial temperature of water and record. 8. Using the pipette put about a pipettes worth of ethanol into the crucible. 9. Place the crucible on top of the tripod and under the calorimeter and light the ethanol. 10. Put the polystyrene cover over the calorimeter and stir the water gently. 11. When all ethanol has burned out record the highest temperature reading on the thermometer. 12. Record the temperature difference. 13. Do not change the
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Draught shielding Spirit burner containing hexane Spirit burner containing methanol Put 200 cm3 of water is placed in a calorimeter or a beaker. Position a thermometer bulb near the middle of the volume of water and record the result as initial temperature. Adjust the calorimeter with a clamp on a balance and leave enough space below the calorimeter for the burner. Add some sort of draught shield or any cardboard‚ books to avoid energy loss. This is important as continuous loss of heat can have significant
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of sugar is higher than 121 degrees Celsius‚ it is an amorphous or non-crystalline candy‚ these are candies formed from a sugar solution that does not crystallize such as peanut brittle‚ and caramel. The purpose of this lab is to understand how temperature influences the texture‚ and firmness of fondant‚ and fudge. Materials and Methods: The ingredients that were used for the fondant recipe were 200 grams of sucrose or better known as table sugar‚ and 118 mL of water. The 118 mL of water and 200
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about the lowest core temperature a human can have before perishing. The character wants to save time by going up the steep hill instead of following the road that has many switch backs this is when everything starts to go wrong. The character goes for about an hour with no sign of the road‚ while assessing the map he hears a metallic pop and a piece of his binding has popped out. The character is trying to find the piece of his binding and while he does this his body temperature begins to lower after
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Weather Service assign to this storm? A.Category Two B.Category Three C.Category Four D.Category Five Answer Key: C Question 2 of 25 4.0 Points What is the relative humidity when the air temperature is 75 degrees Fahrenheit and the Wet Bulb temperature is 65 degrees Fahrenheit? A.40 percent B.50 percent C.60 percent D.70 percent Answer Key: C Question 3 of 25 4.0 Points An unknown force pushes a 17 kilogram block across a smooth (frictionless)
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by these gaseous molecules on the walls of the container is the equilibrium vapor pressure. The magnitude of this pressure depends on the physical properties of the compound and temperature increases Liquid is converted to vapor more rapidly by boiling than evaporating. If the heating rate is increased. The temperature of the boiling liquid does not change‚ but the rate at which
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The Enthalpy Change of the Decomposition of Calcium Carbonate _INTRODUCTION_ RESEARCH QUESTION: What is the enthalpy change of the decomposition of calcium carbonate? BACKGROUND: Enthalpy in chemistry can be thought of as the energy contained within the bonds‚ or the internal energy‚ but it is not heat and you can only measure changes in it. When bond bonds break in the reactants energy is given off‚ when bonds form‚ energy is absorbed. If the energy absorbed is less than the energy released
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