A 850 g aluminum pan is removed from the stove and plunged into a sink filled with 11.0 L of water at 20.0 °C. The water temperature quickly rises to 24.0 °C. Part A What was the initial temperature of the pan in °C? Express your answer with the appropriate units. Tinitial Submit Part B 11 Tinitial VO V—| ΑΣΦ Request Answer What was the initial temperature of the pan in °F? Express your answer with the appropriate units. VE ΑΣΦ C Ć SALA CO — ? ? °F °C
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- A 3.00 L tank contains air at 3.00 atm and 20.0° C. The tank is sealed and cooled until the pressure is 1.00 atm. Part A What is the temperature then in degrees Celsius? Assume that the volume of the tank is constant. Express your answer in degrees Celsius. T = Submit Part B V = ΑΣΦ Submit Request Answer If the temperature is kept at the value found in part A and the gas is compressed, what is the volume when the F Express your answer with the appropriate units. μA Value Request Answer Units ≈ ? ? OThe specific heat of liquid water is 4190 J/kg. K. ▼ Part A What is the molar specific heat of liquid water in J/mol. K? Give your answer as a multiple of R, rounded to the nearest half integer. Express your answer as a multiple of R to the nearest half integer. Cmol = 9 R Submit Correct Part B Previous Answers Equal moles of liquid water and helium gas are heated at constant pressure from the same initial temperature to the same final temperature. By what factor is the entropy increase of the water larger than the entropy increase of the helium? Express your answer to two significant figures. AS water ASHe Submit 17| ΑΣΦ Request Answer ?In an alcohol-in-glass thermometer, the alcohol column has length 12.07 cm at 0.0 °C and length 22.85 cm at 100.0 °C. Part A What is the temperature if the column has length 18.02 cm ? Express your answer using four significant figures. VE ΑΣΦ В α V Part B J Σ T = 57.40 Y Р 6 T = 17.83 Y € T Submit Previous Answers Request Answer ΑΣΦ n 0 X X Incorrect; Try Again; 23 attempts remaining E What is the temperature if the column has length 14.27 cm ? Express your answer using four significant figures. K W @ ? ܝܠ X Q ? S O
- 23.0 g of copper pellets are removed from a 300 degree C oven and immediately dropped into 100 ml of water at 25 degree C in an insulated cup . what will the new water temperature be? express answer in degree CAn insulated beaker with negligible mass contains liquid water with a mass of 0.245 kg and a temperature of 66.4 °C. Part A How much ice at a temperature of -17.8 °C must be dropped into the water so that the final temperature of the system will be 34.0°C? Take the specific heat of liquid water to be 4190 J/kg K, the specific heat of ice to be 2100 J/kg-K, and the heat of fusion for water to be 3.34x105 J/kg. View Available Hint(s) mice = [ΨΕΙ ΑΣΦ 5 kgA 40-cm-long icicle hangs from the eave of a house on a day when the temperature is -2.0°C. T Part A By how many millimeters does the icicle shrink if a bitterly cold wind drops the temperature to -20 °C? Express your answer with the appropriate units. AL= Submit xa μA Value 77 X.10n Units Previous Answers Request Answer ?
- ⦁ When a certain quantity of helium gas contained inside and engine cylinder combusts, the expanding gas causes the 12-cm-radius piston to move outward by 10.0 cm. If the gas remains at a pressure of 120 kPa for this process, what is the heat transfer? (See the diagram at the top of the next page.)⦁ 1,960 J⦁ 1,660 J⦁ 1,360 J⦁ 1,060 J⦁ 760 JThe basal metabolic rate is the rate at which energy is produced in the body when a person is at rest. A 68 kg (150 lb) person of height 1.83 m (6.0 ft) would have a body surface area of approximately 1.9 m². Part A What is the net amount of heat this person could radiate per second into a room at 19.0° C (about 66.2°F) if his skin's surface temperature is 31.0° C? (At such temperatures, nearly all the heat is infrared radiation, for which the body's emissivity is 1.0, regardless of the amount of pigment.) Express your answer in watts. ΑΣφ ? Hnet W %D Submit Request Answer Part B Complete previous part(s)2.12 A mass of 5 kg of water is contained in a piston-cylinder device at 125 kPa. Initially, 2 kg of the water is in the liquid phàse and the rest is in the vapor phase. Heat is now transferred to the water, and the piston, which is resting on a set of stops, starts moving when the pressure inside reaches 300 kPa. Heat transfer continues until the total volume increases by 20%. a) Determine the initial and final temperatures. b) Calculate the mass of liquid water when the piston first starts moving. c) Calculate the work done during this process. d) Show the process on a P-V diagram
- Question 1 Read the question and type your response in the box provided. Your response will be saved automatically. Temperature (°C) A' B CA co B' Heat Added (Joules) D' ********* E' OE D www. Substance Y · Substance X 140 BE The graph depicts the temperature curves for two substances labeled as substance X and Y. Why does the temperature remain constant as heat is added to each substance in the regions labeled A to B, C to D, and A' to B', and C' to D'? Based on the curve for either substance X or substance Y and using what you know about the particulate nature of matter, and the relationship between temperature and potential or kinetic energy, describe why adding heat leads to the step-wise change in temperature depicted in the graphs. We're starting the add-ins runtime, just a moment... R X 80%Your 300 mL cup of coffee is too hot to drink when served at 95.0 °C. Part A What is the mass of an ice cube, taken from a -15.0 °C freezer, that will cool your coffee to a pleasant 60.0 ° ? Express your answer with the appropriate units.