Question

calculate the inital tempature of 20 grams of pure carbon graphite was added to 60 grams of pute water at 20°c in a calorimiter the final tempature wss found to be 24°c the sorcific heay capacity of carbon graphite is .709j/g°c and that of water is 4.18j/g°c assume constant pressure and no added heat loss to the calorimiter nor surroundings

Answer 1

The initial temperature of the carbon graphite before it was added to the water was 31.69°C.

Step-by-step explanation:

To calculate the initial temperature, we need to use the formula for heat:

Heat = Specific heat capacity x mass x change in temperature

The heat absorbed by the water is:

Heat absorbed by water = 4.18 J/g°C x 60 g x (24°C - 20°C) = 10,212.8 J

The heat absorbed by the carbon graphite is:

Heat absorbed by carbon graphite = 0.709 J/g°C x 20 g x (Tinitial - 20°C) = 1418.Tinitial - 28360

Since heat is conserved, the heat absorbed by the carbon graphite is equal to the heat absorbed by the water:

1418.Tinitial - 28360 = 10,212.8 J

Tinitial = (10,212.8 + 28360) / 1418 = 31.69°C

The initial temperature of the carbon graphite before it was added to the water was 31.69°C.