A metal of mass 1.5 kg was heated from 27oC to 47oC in 4 minutes…

A metal of mass 1.5 kg was heated from 27oC to 47oC in 4 minutes by a boiling ring of 75 W rating. Calculate the specific heat capacity of the metal, (Neglect heat losses to the surrounding)
  • A.
    2.5 X103J kg-10C-1
  • B.
    6.0 X102J kg-10C-1
  • C.
    2.5 x 102J kg-10C-1
  • D.
    1.4 X102J kg-10C-1
  • E.
    1.0 x 102J kg-10C-1
Correct Answer: Option B
Explanation
I.Vt = mcθ; C =

I.Vt/mθ

=

75 x 4 x 60/1.5 x 20

= 6.0 X102J kg-10C-1

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