Concept explainers
(a)
Interpretation:The energy needed to transfer in order to raise the temperature of 150 g of aluminum from
Concept Introduction : The formula to calculate heat transfer is,
Where, H is heat transfer, m is mass, c is specific heat capacity and
(a)
Answer to Problem 8E
Heat transferred is
Explanation of Solution
Specific heat of aluminum is
Putting all the above values in the equation of heat transfer
(b)
Interpretation:The energy needed to transfer in order to melt 150 g of aluminum needs to be determined.
Concept Introduction : The formula to calculate heat transfer using the mass and heat of fusion is,
Where, H is heat transfer and L is heat of fusion.
(b)
Answer to Problem 8E
The energy needed to transfer in order to melt 150 g of aluminum is 14175 cal.
Explanation of Solution
Heat of fusion of aluminum (L) is 94.5 cal/ g and mass of aluminum is 150 g.
Use the formula to calculate heat.
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