Suppose that the laboratory temperature were 5 degrees Celsius higher than the temperature at which you performed the experiment. Explain what effect(s) this would have on the experimental results
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Suppose that the laboratory temperature were 5 degrees Celsius higher than the temperature at which you performed the experiment. Explain what effect(s) this would have on the experimental results.
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- A 20.65 g of ice at -10°C was completely melted in 115.35 g of water with an initial temperature of 75°C. The final temperature of the melted ice and water is 52°C. If you are to compute for the value of the latent heat of fusion of the experiment, how much is the percent error compared to the theoretical value? specific heat of ice = 2090 J/kg∙K specific heat of water = 4186 J/kg∙K theoretical value of Lf = 334×103 J/kg A. less than 1% B. between 1% to 5% C. between 5% to 10% D. more than 10%A bag of frozen vegetables with temperature 32◦F is placed in a 75◦F room. After 20 minutes, the temperature of the vegetables has risen to 41◦F. Using this information, find an exponential formula for the temperature of the vegetables where time is measured in minutes. To find the exponential formula, transform the temperature into a new variable for which the problem can be solved as an exponential growth/decay problem. Then find the formula in that variable and transform back to temperature. Based on the formula, what is the temperature of the vegetables after 45 minutes?Q) PLEASE ANSWER THIS QUESTION IN DETAILED, CONVINCING MANNER: Suggest one possible source of error that would cause the experimental values for the specific heat to be less than the actual values.
- The Table shown gives experimental values of the pressure P of a given mass of gas corresponding to various values of the volume V. According to thermodynamic principles, a relationship having the form PVk = C, where k and C are constants, should exist between the variables. Use the natural log (In) and linear regression to solve the following. 1) Find the value of k. a) 0.74 b) 0.86 c) 0.98 d) 1.33 2) Find the value of C. a) 812 b) 765 c) 880 d) 947 3) Estimate P when V = 100.0 in3 a) 18.9 b) 30.8 c) 24.7 d) 49.5 TABLE V(in3) 54.3 61.8 72.4 88.7 118.6 244.9 P(lb/in?) 61.2 49.5 36.6 28.4 19.2 20.1 Write only the letter corresponding to the correct answer.In an experiment on the specific heat of a metal, a 0.20 kg block of the metal at 150 °C is dropped in a copper calorimeter (of water equivalent 0.025 kg) containing 150 cm3 of water at 27 °C. The final temperature is 40 °C. Compute the specific heat of the metal. If heat losses to the surroundings are not negligible, is your answer greater or smaller than the actual value for specific heat of the metal ?A person driving to work saw his neighbor's house with broken front door. He then calls 911 to have it checked. A crime detective then arrived at 9:00 AM on the house and discovered a dead body in the master's bedroom. They evaluated the temperature of the body, and the result is 80.0 -F. They then started checking for a possible murder angle through evidence collection. One hour later, the temperature of the body is checked again, and the reading is 75.0 F. If the room temperature is 70-degree F, evaluate the time for which the murder took place ASsume a normal body temperature of 98.6 F. 8:06 AM O 712 AM () 6.58 AM O 729 AM
- electrical resistance type thermometer of range -180 C has an inaccuracy of 1%. What is the percentage error if this gauge used to measure a temperature of 45 "C? Is this gauge suitable to measure this value of teperature? What is the range of the gauge to give a maximum error of 0.7% for this readine (45 C? The inaccuracy still ±1%. momcterDetermine the Seebeck coefficient and your error, using the data the table below. Must be expressed in µV / °C. Compare the cataloged coefficient with the information value in the literature (any book or summary of the subject covered) for this type of thermocouple. room temperature=25ºC TºC voltage (mV) (millivolts) room temperature 0.2 room temperature+5 0.4 room temperature+10 0.7 room temperature+15 0.9 room temperature+20 1.1 room temperature+25 1.3 room temperature+30 1.6Topic: Ideal Gas Why cannot one write P= const * T, if temperature is measured in C or F ?
- A sample of a serum of mass 26.5 g is cooled from 290 K to 275 K at constant pressure by the extraction of 1.41 kJ of energy as heat. Calculate q and AH and estimate the heat capacity of the sample. report here the heat capacity= J/k.g. 3 sig. numberThe Table shown gives experimental values of the pressure P of a given mass of gas corresponding to various values of the volume V. According to themodynamic principles, a relationship having the form PVk = C, wherek and C are constants, should exist betwoen the variables. Use the natural log (in) and linear regression to solve the following. 1) Find the value of k a) 0 64 b) 0.82 c) 0.78 d) 0.90 2) Find the value of C. a) 1125 b) 765 c) 995 d) 875 3) Estimate P when V = 100.0 in %3D a) 17.1 b) 31.5 c) 26.9 d) 39.9 TABLE V(in3) 59.5 61.8 72.4 88.7 118.6 244.9 P(bin?) 66.3 49.5 36.6 28.4 19.2 20.1 Write only the letter corresponding to the correct answer.Discuss how you can apply the instruments to measure their corresponding parameters. 1. When the cold junction of a thermocouple thermometer is at 0°C and the hot junction at 100°C, the millivoltmeter shows a deflection of 4.2 mV towards the left. The cold junction is now put in an unknown temperature while maintaining the hot junction at 100°C. The millivoltmeter now shows a deflection of 5.2 mV towards the right. Calculate the unknown temperature.