For aluminum, the mass would be 0.90 J/g °C.
The mass of copper is 0.35
The mass for iron is 0.44 °C.
For lead, the mass is 0.12 °C.
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The specific heat of Al has been -0.90 J/g[tex]\rm ^\circ C[/tex], Cu has been -0.35 J/g[tex]\rm ^\circ C[/tex], Fe has been -0.44 J/g[tex]\rm ^\circ C[/tex], and Pb has been -0.12 J/g[tex]\rm ^\circ C[/tex].
Specific heat can be defined as the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree celsius.
The specific heat for metal can be calculated as:
Specific heat (c) = [tex]\rm \dfrac{-\;specific\;heat\;of\;water\;\times\;mass\;of\;water\;\times\;\Delta T\;of\;water}{mass of metal\;\times\;\Delta T\;of\;metal}[/tex]
(a) The specific heat of Aluminum:
c = [tex]\rm \dfrac{-4.184\;J/g.^\circ C\;\times\;39.85\;g\;\times\;4.7\;^\circ C}{11.98\;g\;\times\;72.9\;^\circ C}[/tex]
c = -0.8972 J/g[tex]\rm ^\circ C[/tex].
c = -0.90 J/g[tex]\rm ^\circ C[/tex].
The specific heat of aluminum has been -0.90 J/g[tex]\rm ^\circ C[/tex].
(b) The specific heat of Copper:
c = [tex]\rm \dfrac{-4.184\;J/g.^\circ C\;\times\;40.13\;g\;\times\;1.9\;^\circ C}{12.14\;g\;\times\;75.4\;^\circ C}[/tex]
c = -0.3485 J/g[tex]\rm ^\circ C[/tex].
c = -0.35 J/g[tex]\rm ^\circ C[/tex].
The specific heat of copper has been -0.35 J/g[tex]\rm ^\circ C[/tex].
(c) The specific heat of Iron:
c = [tex]\rm \dfrac{-4.184\;J/g.^\circ C\;\times\;40.24\;g\;\times\;2.4\;^\circ C}{12.31\;g\;\times\;75.1\;^\circ C}[/tex]
c = -0.4370 J/g[tex]\rm ^\circ C[/tex].
c = -0.44 J/g[tex]\rm ^\circ C[/tex].
The specific heat of iron has been -0.44 J/g[tex]\rm ^\circ C[/tex].
(d) The specific heat of lead:
c = [tex]\rm \dfrac{-4.184\;J/g.^\circ C\;\times\;39.65\;g\;\times\;0.7\;^\circ C}{12.46\;g\;\times\;76.7\;^\circ C}[/tex]
c = -0.1215 J/g[tex]\rm ^\circ C[/tex].
c = -0.12 J/g[tex]\rm ^\circ C[/tex].
The specific heat of lead has been -0.12 J/g[tex]\rm ^\circ C[/tex].
For more information about specific heat, refer to the link:
https://brainly.com/question/14630783
