The specific heat of iron is 0.46 J/gC. How many joules will it take to make the temperature of a 150 g bar go up from 25 C to 60 C?

1 Answer

Answer:

2415 J

Explanation:

We know, Heat Absorbed or Evolved by a substance = mass * specific heat capacity * change in temperature.

Here,

Mass #(m) = 150g#
Specific heat capacity #(c) = (0.46J)/(gK)#
Initial Temperature = #25^@C#
Final Temperature = #60^@C#
#DeltaT=60-25=35^@C=35K#

Therefore, total heat supplied = #DeltaE# = #mcDeltaT#
#= 150 * 0.46 * 35# J
#= 2415# J