I. Temperature Measurement 1. A thermometric property is a physical property that changes in a known way with temperature‚ and can therefore be used to measure temperature. The substance used as a thermometer must have a property that varies proportionally / linearly with temperature. [ In other words: When objects are heated or cooled‚ their temperatures change‚ along with some of their properties‚ these properties are known as Thermometric Properties.] Two commonly used thermometric properties
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variance in final temperature for each experiment was less than 10 percent providing proof of repeatability. Equipment used during the experiment included a gram scale‚ thermocouple‚ Styrofoam cup‚ glass beakers‚ microwave‚ an ice bath and ice. The first half of the experiment was dedicated to the mixing of two containers of water at different temperatures. The mass of the water in each container was measured and the containers were then heated or cooled to achieve the temperature desired for the experiment
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measure the enthalpy (H) of a chemical reaction. The main obstacle is that this is a quantity that cannot be measured directly. It instead is observed as heat from one substance is transferred to another while being monitored with a thermometer. A temperature change in a known substance (such as water) can be related to a certain amount of heat (q). q mass T f Ti Specific heat Our calorimeter is going to be a set of Styrofoam coffee cups. These cups are well known insulators‚ and they
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direct methods (changes in temperature and latent heat) and indirect method (magnetization isotherms). This compound undergoes a first-order paramagnetic to ferromagnetic transition with TC ¼ 200 K upon cooling. The paramagnetic phase becomes unstable and it transforms into a ferromagnetic phase under the application of magnetic field‚ which results in a field-induced metamagnetic transition (FIMMT). The FIMMT is accompanied by release of latent heat and temperature of the sample as evidenced from
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Ectotherms and Endotherms- temperature regulation Part A :Types of Temperature regulation 1. Write down the meaning of the terms endotherm and ectotherm. Consult a textbook if necessary. a. endotherm Endotherms are animals that can maintain a constant internal body temperature. For instance mammals and birds are true endotherms that can maintain a constant internal body temperature b. ectotherm Ectotherms are animals that are not able to regulate their body temperature or in simple words‚ they
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trust Baliunas. Next‚ Baliunas discusses the link between El Niño and temperature records saying “during the period of overlap‚ the correlation coefficient between the two data sets...is well over 99 percent” (Baliunas). Using the statistical term to describe the relationship and it helps develop her voice as an educated scientist. Lastly‚ Baliunas discusses if the sun’s energy output was “superimposed on [a] reconstructed temperature record...the two show a good correlation” (Baliunas). Baliunas use
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Heat resistance of endospores of Bacillus pumilus Abstract Spore suspension of Bacillus pumilus was inoculated into universal bottles containing sterile distilled water in water baths at temperatures of 85°C‚ 90°C and 95°C. At specific time intervals‚ a sample was removed and spread on nutrient agar plates. The number of colonies formed was used to determine the D-value and z-value. The D-value for 85°C is 64.1 minutes‚ 25.7 minutes for 90°C and 8.2 minutes for 95°C while the z-value is 11
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677734° E 2. a) Convert the following temperatures from degrees Fahrenheit to degrees Celsius: 300°F: 148.89°C 212°F: 100°C 70°F: 21.111°C 50°F: 10°C 32°F: 0°C 0°F: -17.778°C b) Convert the following temperatures from degrees Celsius to degrees Fahrenheit: 150°C: 302°F 100°C: 212°F 70°C: 158°F 50°C: 122°F 0°C: 32°F –10°C: 14°F 3. a) The temperature increases by 1 ◦ C. How much does it increase in degrees Fahrenheit? 33.8° Fahrenheit b) The temperature increases by 1 ◦ F. How much does it increase
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|decreases|increases| 4. Two bodies are brought into thermal contact with each other. No thermal energy transfer takes place between the bodies. It may be deduced therefore‚ that the bodies must have the same A. specific heat capacity. B. heat capacity. C. temperature. D. internal energy. 5. An ideal gas expands isothermally‚ doing 2500 J of external work in the process. The thermal energy absorbed by the gas in this process is A. zero. B. less than 2500 J. C. equal to 2500 J. D. more than 2500 J. 6. Which
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Yes‚ our relative humidity was different for the two locations because the temperature in the building was lower than the temperature outside. 2. The psychrometer has a "sock" on the bulb of the thermometer. You get the sock wet and twirl the thermometer around for 30 seconds. If the temperature dropped then you spin it again for 15 seconds. Then you subtract the temperature of the psychrometer from the starting temperature and that is the difference. Then you must look at the humidity in the black
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