How much energy is required to change a 31 g ice cube from ice at -11 °C to steam at 112°C? The specific heat of ice is 2090 J/kg -°C, the specific heat of water is 4186 J/kg °C and the specific heat of steam is 2010 J/kg-°C. The heat of fusion of water is 333000 J/kg and the heat of vaporization is 2.26 × 106 J/kg. . Answer in units of J.
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- 9.1 kg of copper sits at a temperature of 72 F. How much heat is required to raise it's temperature to 723 F? The specific heat of copper is 385J/kg-C. answer in exponential form please1. (a) The number of kilocalories in food is determined by calorimetry techniques in which the food is burned and the amount of heat transfer is measured. How many kilocalories per gram are there in a 6-g peanut if the energy from burning it is transferred to 0.5 kg of water held in a 0.1 -kg aluminum cup, causing a 55.9 °C temperature increase? The specific heat of water is 1.00 kcal/kg °C, and the specific heat of aluminum cup is 0.215 kcal/kg °C. Q kcal/g mp (b) Compare your answer to labeling information found on a package of peanuts and comment on whether the values are consistent. A label for unsalted dry roasted peanuts says that 30 g contains 185 calories (kcal). Find the (Q/m) from calorimetry techniques of the label on a box of roasted peanuts. Q EGE 4.86 m cal m labelAn unknown hot metal at 148.7°C with a mass of 49.6g was mixed with 28.61g of water at an initial temperature of 19.74°C. A final temperature (for both water and metal) of 27.71°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.
- How much thermal energy (in J) is required to boil 3.00 kg of water at 100.0°C into steam at 151.0°C? The latent heat of vaporization of water is 2.26 x 10° J/kg and the specific heat of steam is 2010 kg.°C HINT Need Help? Read ItA student obtains the following data in a calorimetry experiment designed to measure the specific heat of aluminum. Initial temperature of water and calorimeter 70.3°C Mass of water 0.402 kg Mass of calorimeter 0.04 kg Specific heat of calorimeter 0.60 kJ/kg.°C Initial temperature of aluminum Mass of aluminum Final temperature of mixture (a) Use these data to determine the specific heat of aluminum. J/kg. °C (b) Is your result within 15% of 900 J/kg . °C? Yes No Need Help? 26.8°C 0.199 kg 66.4°C Read ItHow much energy is required to raise the temperature of 0.25 kg of water from 20.°C to 80.°C? Answer in J. (What must i do to solve this?)
- 18. How many gallons of gasoline must be burned in order to raise the temperature of 10 liters of water from 25o C to 50o C, assuming 50 percent efficiency in converting the heat released into heat in the water? (The heat of combustion of gasoline is 3.4 × 107 cal/gallon.)A food product containing 80% moisture content is being frozen. Estimate the specific heat of the product at -6 ° C when 80% of the water is frozen. The specific heat of the dry product is 2 kJ / (kg ° C). it is assumed that the specific heat of water at -10 ° C is the same as the specific heat of water at 0 ° C, and the specific heat of ice follows the function Cp ice = 0.0062 Freezing point + 2.0649. Cp of frozen product = .... kJ / kg ° C.An incandescent light bulb with a surface area of 0.0120 m2 and an emissivity of 0.9 has a surface temperature of 178°C. What is the rate of thermal radiation emitted from the bulb [round your final answer to one decimal place]? {o = 5.6704 x 10-8 W/(m²-K“)} 60 W T.