Question

A solid of mass
150
is beated
9m
to 100°c
of
and dropped in 500 ml
water at
The
equilibrium
temparature
the mixture
20c
is​

Answer 1

Heat absorbed by the ''calorimeter + water'' system is equal to the heat released by the solid.

Specific heat of water S

w

=1 cal/g

o

C

So, m

w

S

w

(40−15)+m

c

S

c

(40−15)=m

s

S

s

(90−40)

Or 100×1×25+100×0.1×25=250×S

s

×50

⟹ S

s

=0.22 cal/g

o

C