Question

Calculate the heat energy required to raise the temperature of 4.0kg of mercury from 10c to 70c

Answer 1

The specific heat capacity of mercury is 138 J/kg·°C.

To calculate the heat energy required to raise the temperature of 4.0 kg of mercury from 10 °C to 70 °C, we can use the formula:

Q = mcΔT

Where:
Q = heat energy required (in joules)
m = mass of the substance (in kilograms)
c = specific heat capacity of the substance (in J/kg·°C)
ΔT = change in temperature (in °C)

Plugging in the given values:

Q = (4.0 kg) × (138 J/kg·°C) × (70 °C - 10 °C)
Q = (4.0 kg) × (138 J/kg·°C) × (60 °C)

Calculating further:

Q = 33,120 J

The heat energy required to raise the temperature of 4.0 kg of mercury from 10 °C to 70 °C is 33,120 joules.