Thermodynamics

For the specific sample that you used, briefly explain why you think that the purity was not 100%. The scraps of aluminium were not pure because of the oxidation of the surface of the container along with the coats of paint and plastic that covered the aluminum. Name two other aluminum containing substances with which you are familiar that could be analyzed by the method used in this experiment. Two other substance that contain aluminum that could be analyzed using this experiment are window…

Jessica Vandeventer 16 March 16 Static Electricity or Electrostatics Purpose/Question- The purpose of this experiment it to explore static electricity and to explore how charges effect one another. Hypothesis– Any like charges will repel each other and any unalike charges will be attracted to each other. Data Tables/ Graphs – Charging Material Pepper Salt Paper Aluminum Styrofoam Uncharged Nothing Nothing Nothing Nothing Nothing Cotton Nothing Nothing Stuck to ruler Stuck to ruler Nothing Fur…

In our experiment, to look deeper into exothermic reactions, we first had to create our own calorimeter. We did this using 3 separate 8 ounce Styrofoam cups, one for each compound. We then used cardboard to create a lid for each cup and taped it to the sides so the seal would be as tight as we could make it. We also needed a 150mL beaker to measure out the 50 mL of distilled water that we used in each trial to dissolve each compound in. To weigh out each compound we also needed an electronic…

Jordan Bean Section 18 Comparative Effects of Cooled Environmental Temperatures on Metabolic Rate of Endotherms and Ectotherms Abstract The purpose of the experiment was to compare the metabolic rate of endothermic vetertebrates, using Mus musculus (laboratory mice), and ectothermic vertebrates, using Rana pipiens (leopard frogs), at room temperature (on average, 22.3 degrees Celsius), and at cooled body temperature (ten degrees lower than the room temperature recorded for each sample). We used…

Paul Weel Radiator Holdings, also known as PWR, is an South Queensland based company that designs and manufactures customized cooling solutions for automotives. The company offers a wide range of water, oil and air based cooling solution that are high in quality and are lightweight. Even though PWR has been in the business since 1998, as part of strategic move, it decided to go public in November 2015 in ASX and raised $150 million. Prior to the IPO, PWR acquired a C&R, US-based company, to…

When using a 100 mL graduated cylinder marked every 1 mL, there should be one decimal places in each reading. The first decimal place is an estimated because the graduated cylinder is marked for every 1 mL. The final definitive number is in the ones place, so the tenth place should be estimated, as the last digit of measurement is usually estimated. For example, on a 100ml graduated cylinder marked every 1 mL, a sample reading would be 75.6mL, three significant figures, because 75 would be shown…

Fluid Management in CRRT The volume of hourly ultrafiltrate removed depends on an hourly fluid balance calculation and assessment of patient’s hemodynamic and fluid status. Hourly fluid goal calculation is the non-CRRT intake, plus fluid loss ordered by the physician, minus non-CRRT output. The system infuses and removes fluid after the fluid balance is calculated, and the desired volumes are input into the system. The system monitors the volume of replacement fluid, dialysate, and the volume of…

Heat has been a problem to mankind for millions of years. It has caused heat strokes, heat rash, and dehydration. A way to obstruct this problem is color. Different colors absorb heat worse or better. The reason colors absorb light is because when color absorbs light, it turns it to thermal energy. If a color absorbs lots of energy, It makes lots of thermal energy (Morton, J. L. "Color and Heat Absorption"). Scientists believe that darker colors absorb better, and lighter absorb worse…

Heat water in a pan or beaker until it is boiling vigorously. While the water is boiling, measure the mass of your metal object, marking off your answer to one more decimal place than what the scale marks off. Once the water is boiling, drop the metal into the water, leaving it in for about five minutes to allow it to reach the temperature of the water (100.0 °C) Place one Styrofoam cup into the other. This will be your calorimeter. Measure the mass of the calorimeter. Fill about ¾ full with…

8. Thermoregulation is the process in which your body regulates hypothalamus to sense normal body temperature. 9. Hypothalamus is what sensors the body temperature. 10a. The two mechanisms the body uses to cool itself are the blood vessels in the skin dilate to radiate heat and the sweat glands increase sweat production. 10b.The two mechanisms the body uses to heat itself are the blood vessels in the skin constrict, reducing heat loss and the muscles begin to shiver, generating heat. 11a.…