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Question

An 18.7 g sample of plantium metal increases in temperature by 2.3 degree celcius when 5.7 Joules of heat are added. What is the specific heat of plantium

The specific heat of silver is 0.24 J/g times celcius degree. How much heat must be added to a silver block of mass 86 g to raise its temperature by 9.0 degree celcius

How would I do this becasue I have no idea where to satart

Answer 1

Specific heat is defined by the number of joules of energy required to heat 1 gram of a substance by 1 degree. The units are J/gK.

1.) To find the specific heat, merely use the following equation: c = ΔE/mΔT. c = specific heat, ΔE is the change in energy, m is mass, and ΔT is the change in temperature.
5.7J/(18.7g * 2.3 K) gives a specific heat of 0.133 J/gK.

2.) Take the equation above and solve for ΔE:
c = ΔE/mΔT
ΔE = mcΔT
ΔE = .24 J/gK * 86g * 9.0 K
ΔE = 185.76J