Answer : The initial temperature of water (in ) =
Solution : Given,
Mass of gold = 15.23 g
Mass of water = 28 g
Initial temperature of gold =
Final temperature of gold =
Final temperature of water =
Heat capacity of gold =
Heat capacity of water =
The formula used for calorimetry is,
q = m × c × ΔT
where,
q = heat required
m = mass of an element
c = heat capacity
ΔT = change in temperature
In the calorimetry, the energy as heat lost by the system is equal to the gained by the surroundings.
Now the above formula converted and we get
Now put all the given values in this formula, we get
By rearranging the terms, we get
Thus the initial temperature of water =