Question

A. Adding cold metal to hot water can also allow us to determine specific heat. Given the following data for such an experiment calculate the specific heat of the metal.
Mass of metal:46.24 ; mass of water 20.0g ; intial intemprature metal: 23C ; intial temprature water 34.5C; final temprature metal and water 30.8C.

B.Which is the better method? Adding hot metal to cold water OR adding cold metal to hot water. Explain Advantages and Disadvantages.

Answer 1

we know that

heat lost by hot body = heat gained by cold body

in this case

hot body is water

cold body is metal

so

heat lost by water = heat gained by metal

we know that

heat = m x s x dT

so

Mm x Sm x dTm = Mw x Sw x dTw

46.24 x Sm x ( 30.8 - 23) = 20 x 4.184 x ( 34.5 - 30.8)

Sm = 0.85844

so

the specific heat of the metal is 0.85844 J / g C

2)

Adding hot water to cold metal is the better method

because

if hot metal is added to cold water , water may be vaporized