Laws of thermodynamics

Name: Heat stroke (hyperthermia) Overview: Hypothermia occurs when the body temperature falls below the warning level and the heart can no longer pump enough blood to make it flow through the whole body. Hypothermia occurs when the temperature of our body drops below 35 degrees Celsius or 95 degrees Fahrenheit. Causes: Hypothermia caused as a result of exposure to cold weather- without adequate protection - for an excessive time, in wherein the body is no longer able to produce the heat…

Pure water boils at 212˚ Fahrenheit (100˚ Celsius) at sea level, but water can also boil at temperatures as low as -90˚ Fahrenheit (theoretically). The reason for this phenomenon is pressure. “There is a direct correlation between pressure and temperature when it is dealing with the boiling point of water,” says Jacob Young, a mechanical designer at Blauch Brothers, Inc (Young, J.C. 2017). The pressure on Earth at sea level is 14.696 PSIA (Pounds per Square Inch Absolute). This pressure is…

In part C, the enthalpy of formation of magnesium oxide was found by adding together three reactions, as shown in the table below. Experiments were performed to obtain the ΔHrxn value of the first two reactions in the table, which were reactions 4 and 5 respectively in the experimental section, while the ΔHrxn for the third reaction in the table was provided. Using the ΔT obtained experimentally, heat energy (q) was determined using the equation q = mCΔT + CΔT where q was the heat, m was the…

In every experiment there are constraints and requirements. Specifically in our Solar Oven Project we had budget, material, and performance constraints. The inside chamber, where the biscuit is cooked, must have a volume of 1000 cm3. In addition to that, the length of the window and the depth of the inside chamber must be at least 5 cm. The window must also be a square. The inside cooking chamber must be able to easily insert and remove the biscuit and hold the biscuit in place so when the oven…

Our government has three groups; law makers, law enforcers, and law judgers. With theses groups we are able to keep the law and keep peace within our citizens. You can vote for the elected individuals twice a year at the age of 15. You can run for Mairs ( the name of the elected people) as many time as you…

Procedure: Before beginning each experiment, remove all clutter from the workstation and read the directions for the experiments thoroughly. Part 1: Warm slightly more than 300 mL of water to approximately 70 degrees Celsius. Measure out 150 mL of water into the coffee cup calorimeter. Take the temperature of this water in the coffee cup calorimeter once it has reached a steady temperature. Then, add an ice cube approximately the size of a large marshmallow. Stir the ice and water and measure…

Crayfish are freshwater crustaceans that use their claws called chelipeds,for warning off predators. When frightened, these crayfish lift their chelipeds to make threatening gestures, all while moving backwards or staying still. We examined how long it would take for crayfish to calm down once removed from the water and if the temperature had any influence to this observation. To do this, we placed two crayfishes in room temperature water and another two in colder water for an interval of five…

The Effect of Cellular Respiration at Low and High Temperatures Introduction Cellular respiration can include two processes, aerobic respiration and anaerobic respiration. The main purpose of cellular respiration is to breakdown sugars into smaller structures so that the cell can use it as energy (Reece, et al. 2014). The main concept of the respiration lab is aerobic respiration. This is the process that organic compounds will be degraded from oxygen to produce water, carbon dioxides, and…

surface area vs rate of time Introduction: In the investigation an experiment is conducted investigate if the breaking of alka seltzer into ½, ¼ and none effect the time it dissolves. The context of the problem is the time it dissolves to have the medicine show its effect. This problem exist in real life as people take alka seltzer to relief heartburn, acid digestion and stomach aches. This experiment would benefit society because it informs the society the better way of consuming medicine or…

Climate change is clearly evident in the world around us and it is having and will continue to have a major impact on our lives. Therefore, it is very relevant to analyze the changes in climate that have occurred in Howard County, Maryland such as the significant changes in mean precipitation and timing of precipitation, winter temperature and the summer precipitation. Furthermore, it is crucial to understand that many of these changes will be clearly seen in the relatively near future if…