Question

1. a jeweler is trying to release a diamond from its setting in a 15g silver ring. if the temperature has to change by 12°c how much heat is needed? the specific heat of silver is 0.235 j/g°c

15 x 0.235 x 12 = 42.3 j
3.) the specific heat of copper is 0.39 j/g°c. how much heat is needed to raise the temperature of 1250g of copper from 25°c to 55°c?

Explanation:

Step1: <Find the formula for heat>

The formula for heat \(Q = mc\Delta T\), where \(m\) is mass, \(c\) is specific heat capacity, and \(\Delta T\) is the change in temperature.

Step2: <Calculate the change in temperature for copper>

For copper, \(m = 1250g\), \(c=0.39J/g^{\circ}C\), \(\Delta T=T_{final}-T_{initial}=55 - 25=30^{\circ}C\)
Substitute into the formula: \(Q = 1250\times0.39\times30\)

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Answer:

\(14625J\)