 9

Define the specific heat of a body.

If 100 grammes of iron be boiled for some time in water, when the height of the barometer is 760 m.m., and be then quickly transferred to a vessel containing 150 grammes of water at $10^{\circ }$C, what will be the common temperature of the iron and water ? It being assumed that no heat is lost, that a gramme of hot water adheres to the iron when it is transferred to the cold water, and that the specific heat of iron is 0.114.