Work done on aluminium = energy added to aluminium = Change in internal energy of aluminium
Here, Cp is specific heat of aluminium.
E = 0.80*0.91KJ*(40-22) = 13104 J
A 0.80 kg block of aluminum is heated at atmospheric pressure so that its temperature increases...
A 1.00 kg block of aluminum is heated at atmospheric pressure so that its temperature increases from 22.0°C to 40.0°C. (a) Find the work done on the aluminum. (b) Find the energy added to it by heat. (c) Find the change in its internal energy. Please explain thank you.
A 2.0 kg bar of copper is heated at atmospheric pressure so that its temperature increases from 20°C to 50°C. (a) What is the work done on the copper bar by the surrounding atmosphere? SOLUTION Conceptualize This example involves a solid, whereas the preceding two examples involved liquids and gases. For a solid, the change in volume due to thermal expansion is very small. Categorize Because the expanslon takes place at constant atmospheric pressure, we categorize the process as isobaric...
A 1.00 kg copper bar is heated to atmospheric pressure so that its temperature increases from 20 ° C to 50 ° c. The density of copper is 8.92 x 103 kg and the coefficient of volumetric expansion is 4.5 x 10-5 (C0) -1 Determine the change in volume of the copper bar. (Remember that p = m / V)
An aluminum block of mass 9.0 kg is originally at a temperature of 25°C and 1 atm. It is then heated to a temperature of 67°C without any change in pressure. The specific heat of aluminum is 900 J/(kg · °C), its density is 2.70 103 kg/m3, and the coefficient of linear expansion is 24 ✕ 10 −6 /°C. (a) Determine the work done by the aluminum block.
A lead block of mass 7.0 kg is originally at a temperature of 15°C and 1 atm. It is then heated to a temperature of 64°C without any change in pressure. The specific heat of lead is 128 J/(kg - °C), its density is 1.13 x 104 kg/m3, and the coefficient of linear expansion is 29 x 10 -6/oC (a) Determine the work done by the lead block (b) How much heat energy is transferred during this process? J (c)...
A steel block of mass 6.4 kg is originally at a temperature of
18°C and 1 atm.
A steel block of mass 6.4 kg is originally at a temperature of 18°C and 1 atm. It is then heated to a temperature of 68°C without any change in pressure. The specific heat of steel is 452 J/(kg . °C), its density is 7.85 x 103 kq/m3, and the coefficient of linear expansion is 12 x 10-6/oc. (a) Determine the work done...
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5 kg of liquid water at 100°C was converted to steam at 100°C by boiling at standard atmospheric pressure, in the arrangement of the figure below. The volume of the water changed from an initial value of 0.005 mº as a liquid to 8.355 mº as steam. Latent heat of vaporization for water Lv = 2256 kJ/kg. Standard atmospheric pressure is 1 atm or 1.01 x 109 Pa. Loaded Piston Steam Insulation Insulation Liquid water Thermal...
if a 100 kg sample of aluminum at 25.0 °C is heated with 500 kJ of heat energy, what will be the final temperature of the metal sample? The specific heat of aluminum is 0.897 J/ g• °C
Entropy of naphthalene: Consider naphthalene C10H8 at atmospheric pressure. It is a solid with a melting point at 80.1 degrees Celsius and a boiling point at 218 degrees Celsius. The latent heat of fusion is 19,123 kJ / mol. The molar heat at constant pressure of solid naphthalene has a functional temperature dependence (in K) which is linear. Its value is 0 at T = 0 K and 188.41 J / mol-K at T = 317.15 K. The molar heat...
An aluminum block weighing 32 kg initially at 140°C is brought into contact with a block of iron weighing 44 kg at 60°C in an insulated enclosure. Determine the final equilibrium temperature and the total entropy change for this process. The specific heat of aluminum at 400 K is Cp0.949 kJ/kg.K. The specific heat of iron at room temperature is Cp=0.45 kJ/kg.K. The final equilibrium temperature is 108,35 K. The total entropy change for this process is 397 kJ/K