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How many grams of copper could be heated from 20 oC to 75 oC if 1200 calories are applied to it?
Wiki User
∙ 6y ago
The mass of copper is 240 g.
Use the following formula:
q = m x c x DeltaT,
where:
q is energy, m is mass, c is specific heat capacity, and DeltaT is the change in temperature.
DeltaT = Tfinal-Tinitital
Known
q = 1200 cal
cCu = 0.0923 cal/g.oC
Tinitial = 20oC
Tfinal = 75oC
DeltaT = 75oC - 20oC = 55oC
Unknown
mass of copper
Solution
Rearrange the equation q = m x c x DeltaT to isolate m. Plug in the known values and solve.
m = q/(c x DeltaT)
m = 1200/(0.0923 x 55) = 240 g (rounded to two significant figures)
Wiki User
∙ 6y ago
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