Umar has two pans, each containing 500cm3 of water. Pan 1 is made from copper and pan 2 is made from iron. Both have a mass of 1.5kg. Which pan will require more energy to heat the water to 100°C?
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Given info : Umar has two pans, each containing 500cm3 of water. Pan 1 is made from copper and pan 2 is made from iron. Both have a mass of 1.5kg.
To find : which pan will require more energy to heat the water to 100°C ?
solution : The specific heat of iron is 0.450 J/g/°C and the specific heat of copper is 0.385 J/g/°C
we know,
Heat, Q = mS∆T
⇒Q ∝ S
i.e., heat is directly proportional to specific heat capacity of substance.
higher the value of S, higher the energy is required to hear the substance.
as specific heat of iron is higher, so higher energy is required to heat the water to 100°C.
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Answer:
It would be pan 2
Explanation:
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