Homework Help: chemistry

Posted by Austin on Tuesday, October 2, 2012 at 8:53pm.

How much heat is required to heat 28 g of
solid silver from 130
◦
C to liquid silver at
961
◦
C? The speciﬁc heat of solid silver is
0.235 J/g ·
◦
C, and the heat of fusion of silver at its melting point of 961
◦
C is 11.3 kJ/g.
Answer in units of kJ

chemistry - DrBob222, Tuesday, October 2, 2012 at 9:04pm
q1 = heat to raise T from 130 to 961.
q1 = mass Ag x specific heat solid Ag x (Tfinal-Tinitial) [Note: Tfinal is 961).

q2 = heat to melt Ag at 961C.
q2 = mass Ag x heat fusion.

Total q = q1 + q2

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