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What is the final temperature (in ˚C) of a 2.03 kg glass baking dish if it was heated from a starting temperature of 16.2˚C by 611 kJ of heat [round your final answer to zero decimal places]?
{specific heat of glass = 840 J/(kg∙˚C)}
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- A hot steel plate with a surface area of 1.52 m2 and a constant surface temperature of 166°C is exposed to ambient air at 22°C. If the convection heat transfer coefficient is 15.9 W/m². K, what is the rate of heat transfer (in W) from the plate to the air [round your final answer to zero decimal places]? T. S Air, T, 00How much energy in Joules is required to melt 415g of ice? The latent heat of fusion of ice is: Lf = 3.33 × 10³J/kg Do NOT include units in your answer. Round your answer to 2 decimal places. Do NOT change to scientific notation. Ignore significant figures.An arctic weather balloon is filled with 40.7 L of helium gas inside a prep shed. The temperature inside the shed is 7.°C. The balloon is then taken outside, where the temperature is −11.°C. Calculate the new volume of the balloon.You may assume the pressure on the balloon stays constant at exactly 1atm. Round your answer to 3 significant digits.
- Problem 5.5: A kitchen oven has an interior volume V of 0.12 m³. The air in the oven is preheated from an initial temperature To of 20°C to a baking temperature T₁ of 175°C. The initial pressure po inside the oven equals the outside pressure of 1000 hPa. 2 a) If the oven is sealed (i.e., the process is isochoric), how much heat is added to the air in the oven? Answer: 1.6 × 104 J b) If the oven is not sealed (the normal case), air will gradually leak out as the air expands from heating, so that the process is iso- baric. Assume that the air leakage is one-way (no outside air enters the oven). How much total heat is added to the air? (Hint: You are heating not only the air that remains in the oven at the end of the heating process but also some of the air that escapes. You will have to set up and integrate a differential equation. Assume that the air temperature inside the oven is always uniform at any point in theA metal ball, which has a surface area of 175 cm2, is heated in a furnace to 678 oC. a)State the value of temperature in the correct SI units. State your answer as a whole number (and use this value as a whole number, if needed in subsequent calculations). b)State the area in correct SI units. Give your answer in Scientific notation using E for x10x., e.g. you would enter 3.21x106 as 3.21E6. Make sure you have 3 significant figures in the first part of the answer and use this value to this degree of accuracy, if needed in subsequent calculations.Note that Numbas will mark equivalent answers as correct e.g. if 3.21E6 was the correct answer then 32.1E5 or 321E4 etc. would also be marked correct. c)If the emissivity of the metal ball is 0.7, at what rate does it radiate energy? (Stefan Boltzmann constant, s= 5.67 x 10-8 W m-2 K-4) State your answer (in Watts) to the nearest whole number. d)What is the peak wavelength of the radiation emitted by the metal ball? Give your answer (in µm) to…A container holds 1.8 kg of ice at -15.0 degree C. (mass of the container can be ignored) Heat begins to be supplied to the container at a constant rate of 600 J/min. The specific heat of ice water is 2010 J/(kg K), and the latent heat of melting is 334000 J/kg. How many mins. until ice begins to melt? How many additional mins will it take until the ice has fully melted?
- 0. The coffee's temperature is changing at a rate of r (t) = -8(0.8')'C per minute, with t in minutes. Estimate the coffee's temperature A cup of coffee at 90 C is put into a 20°C room when t = 10. when t Round your answer to two decimal places.How much heat is needed to melt 15.50 kg of silver that is initially at 25 °C? The melting point of silver is 961°C, the heat of fusion is 88 kJ/kg, the specific heat is 230 J/kg · Cº. Express your answer to two significant figures and include the appropriate units. HA ? Q = Value UnitsA physical chemist measures the temperature inside a vacuum chamber. Here is the result. T=-75.3 degrees celsius Convert to SI units. Round your answer to decimal place.
- 4. 100.0 g of 4.0°C water is heated until its temperature is 37°C. If the specific heat of water is 4180J/kg°C, calculate the amount of heat energy needed to cause this rise in temperature. 5. A 0.3 kg piece of copper is heated and fashioned into a bracelet. The amount of energy transferredby heat to the copper is 66,300 J. If the specific heat of copper is 390 J/kg celcius, what is the change of thecopper's temperature?An unknown hot metal at 107.03°C with a mass of 48.67g was mixed with 37.99g of water at an initial temperature of 13.65°C. A final temperature (for both water and metal) of 26.53°C was reached. In units of J/(g°C), what is the specific heat of the unknown metal? Note: In the space below, please enter you numerical answer. Do not enter any units. If you enter units, your answer will be marked as incorrect.An ordinary glass is filled to the brim with 339 mL of water at 100 deg C. If the temperature decreased to 23 deg C, how much water (in mL) could be added to the glass? Use Bas = 27 x 106 K; Bn2o = 210 x 106 K1. Round your answer to 2 decimal places. Add your answer