A sample 348G sample of stream at 127 Celsius is cooled to 103 Celsius find the change in heat content of the system

Answer 1

To find the change in heat content of the system, we first need to calculate the heat lost during the cooling process.

The heat lost can be calculated using the formula:

Q = m * c * ΔT

Where:
Q = heat lost
m = mass of the stream (348g)
c = specific heat capacity of the stream (assuming water, which is 4.18 J/g°C)
ΔT = change in temperature (127°C - 103°C)

ΔT = 127°C - 103°C = 24°C

Plugging in the values:

Q = 348g * 4.18 J/g°C * 24°C
Q = 348g * 4.18 J/g°C * 24°C
Q = 348 * 4.18 * 24
Q = 348 * 100.32
Q = 34904.32 J

Therefore, the heat lost during the cooling process is 34904.32 J.

Since heat content is a state function, the change in heat content of the system will be equal to the negative of the heat lost:

Change in heat content = -34904.32 J

So, the change in heat content of the system during the cooling process is -34904.32 J.