The quantity of heat needed to bring a rise θ in the temperature of a
(i) mass m1 , of a liquid of specific heat capacity s1 , is H1 .
(ii) mass m2 , of a solid of specific heat capacity s2 , is H2 .
If the quantity of heat needed to bring the same rise θ in the temperature of a mass (m1 + m2 ) of a substance of specific heat capacity (s1 + s2 ), is H, the difference [H – H1 + H2 )], equals
(1) zero
(2) (m1 s1 + m2 s2 ) θ
(3) (m1 s2 + m2 s1 ) θ
(4) (m1 s2 – m2 s1 ) θ
