Aluminum specific heat capacity

As an example of the use of the heat capacity values, calculate the calories required to heat 1 kilogram of aluminum from 10° C to 70° C. Multiply the grams of metal by the 60° C increase by the specific heat capacity ... 

Near room temperature, the specific heat capacity of benzene is 1.05 J-(°C) 1-g 1. Calculate the heat needed to raise the temperature of 50.0 g of benzene from 25.3°C to 37.2°C. (b) A 1.0-kg block of aluminum is supplied with 490 kj of heat. What is the temperature change of the aluminum The specific heat capacity of aluminum is 0.90 J-(°C) 1-g l. 

O The specific heat capacity of aluminum is 0.902 J/g°C. The specific heat capacity of copper is 0.389 J/g°C. The same amount of heat is applied to equal masses of these two metals. Which metal increases more in temperature Explain. 

A 5.00-g sample of aluminum pellets (specific heat capacity = 0.89 J °C 1 g 1) and a 10.00-g sample of iron pellets (specific heat capacity = 0.45 J °C 1 g 1) are heated to 100.0°C. The mixture of hot iron and aluminum is then dropped into 97.3 g of water at 22.0°C. Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings. 

High-quality audio amplifiers generate large amounts of heat. To dissipate the heat and prevent damage to the electronic devices, manufacturers use heat-radiating metal fins. Would it be better to make these fins out of iron or aluminum Why (See Table 9.3 for specific heat capacities.)... 

The choice of materials for plate heat exchanger/reactors also depends on the desired dynamic properties of the microsystem. One important parameter is the energy demand for fuel processor start-up, which results from the product of specific heat capacity and density of the construction material. For a given geometry and volume of the device, aluminum is favored over copper and stainless steel. 

What is the heat gained/released at constant pressure equal to (q = ) What is the heat gained/released at constant volume equal to (qv = ) Explain why AH is obtained directly from a coffee-cup calorimeter, whereas AE is obtained directly from a bomb calorimeter. High-quality audio amplifiers generate large amounts of heat. To dissipate the heat and prevent damage to the elecfronic components, heat-radiating metal fins are used. Would it be better to make these fins out of iron or aluminum Why (See Table 6.1 for specific heat capacities.)... 

A drop of water weighing 0.48 g condenses on the surface of a 55-g block of aluminum that is initially at 25 °C. If the heat released during condensation goes only toward heating the metal, what is the final temperature in Celsius of the metal block (The specific heat capacity of aluminum is given in Table 3.4 and is 0.903 J/g °C.)... 

In Fig. 1 there are three example applications from a Mettler DSC Application Description (DSC of the type illustrated in Fig. 4.4, left center). Calculate the crystallinity of the polyethylene sample (for the heat of fusion, look in the Appendbc) and the calibration constant for heat capacity measurement in J/(s V) [the aluminum oxide specific heat capacity is 1.005 J/(K g)j. Furthermore, estimate the heat of fusion of phenacetin [use Eq. (1), of Fig. 5.28 the equilibrium melting temperature of pure phenacetin is 407.6 K]. 

CHECK The units °C are correct. The final temperature of the mixture is closer to the initial temperature of the water than the aluminum. This makes sense for two reasons (1) water has a higher specific heat capacity than aluminum, and (2) there is more water than aluminum. Since the aluminum loses the same amount of heat that is gained by the water, the greater mass and specific heat capacity of the water make the temperature change in the water less than the temperature change in the aluminum. 

Aluminum wiU lose more heat because it has the higher specific heat capacity. 

The aluminum is cooler because it has a lower heat capacity (specific heat). 

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