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A metal of mass 1.5 kg was heated from 27oC to 47...

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 is B

I.Vt = mcθ; C =
I.Vt/
=
75 x 4 x 60/1.5 x 20

= 6.0 X102J kg-10C-1