Chemistry II A 20.0 g sample of ice at -5 degrees C is added to 50.0 g of water at 40 degrees C. a 20.0 g sample of ice at -5 degrees C is added to 50.0 g of water at 40 degrees C. What is the final temperature of the system? S (of ice)= 2.0 J/gram celcius S (of water) = 4.18 J/gram celcius Change in enthalpy of fusion is 6.01 Jk/mole There are 4 processes in this system : 1. Sample of ice at -5 degrees C raise to ice at 0 degrees C (before it begin to melt) 2. Water at 0 degree
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from prolonged exposure to high temperatures -- usually in combination with dehydration -- which leads to failure of the body's temperature control system. The medical definition of heat stroke is a core body temperature greater than 105 degrees Fahrenheit, with complications involving the central nervous system that occur after exposure to high temperatures. Other common symptoms include nausea, seizures, confusion, disorientation, and sometimes loss of consciousness or coma. 2. Based on
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is turned off. 2. Write an algorithm in pseudo-code to solve the following problem: Input a temperature in Fahrenheit, and output the temperature in Celsius and Kelvin. Formulas needed are: C = ( 59 ) (F – 32). K= ( 59 ) (F – 32) + 273.15 Algorithm: Fahrenheit to Celsius and Kelvin conversion. 1. Start 2. Output “Enter Temperature in Degrees Fahrenheit” 3. Put in number 4. Put in Celsius = ( 59 ) (number in F – 32) 5. Output “Temperature in Celsius”
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IA Problem: What is the affect of changing temperature in a reaction? Hypothesis: The higher the temperature, the more heat will be produced which will cause the potato slurry to denature quicker, because heat breaks down enzyme. Variables: Independent- temperature potato slurry is placed in Dependent- rate of reaction, potato slurry, H2O2 Controlled- Same size test tubes and syringes, amount of potato slurry in test tubes, amount of h2o2 put in potato slurry, amount of distilled
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Introduction In this assignment I will be assessing 3 participant’s heart rate, blood pressure and temperature as they complete the Halved stair step test. I will be basing my assignment on one participant, participant 1. Participant 1 wants to take part in the 2015 Great North Run and therefore needs to prepare for it. Participant 1 is a 25 fit and healthy male but is currently smoking and has been for 10 years. This may be clear in the final results. In the results I expect to see his heart rate
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For this experiment, students were tasked with the question, “What variable has the greatest influence on the distance that an Alka Seltzer can travel?” Children were broken up into groups and an example was shown to display directions, firstly, one must have a weight scale, a petri dish, several packets of Alka Seltzer tablets, a PVC Elbow, water, a film canister, ice and heaters, along with tarp and meter sticks. Using the tarp and meter sticks, one would set up a station to measure the distance
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Common house crickets, Acheta domesticus, were provided by the instructor in three colonies in three separate containers based on their size, small, medium, and large. Ten crickets were retrieved from the small colonies and placed into a beaker. The crickets were individually removed from the beaker and placed into separate small capped vials. The weight of the vial containing the cricket was weighted using a balance scale. The cricket was then removed from the capped vial and placed into a beaker
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vertical closed cooker. It is designed for cooking at or near the boiling point of the solution. Immediately after cooking, the solution is quenched (rapidly cooled) to about 154 to 162 degrees Fahrenheit (68-72 degrees Celsius). During the steeping process, the temperature is dropped to 104 degrees Fahrenheit (40 degrees Celsius). After steeping, the solution is pumped into the washers. Next, actual chips are produced using the coarse masa, which is kneaded and mixed
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Expose a slice of bread or a citrus peel to a 70 degree Fahrenheit environment. A blue-green mold should develop. •Sterilize the equipment. Place the flask in the oven at 315 degrees Fahrenheit for one hour, or sterilize in a pressure cooker for at least 15 minutes. Wash the milk bottles. •Fill the Erlenmeyer flask. Cut the bread or citrus peel into small pieces and fill the flask. Allow to incubate in the dark at 70 degrees Fahrenheit for 5 days. After this incubation period, the flask can be
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EGGS "A ""A Hne"A hen is only an egg's way of making another egg." ~ Samuel Butler making another egg." "Besides for being a staple ingredient in cookie dough, we like eggs because there's lots of science involved with them." ~Blake Rider One of the most notable characteristic of an egg is how much an egg white can foam up. Why does this happen? Eggs are approximately 90 percent water and 10 percent protein. There is an electrical attraction between water molecules (for this reason
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