Question

How much heat is required to raise the
temperature of 0.765 kg of mercury by 42 °C?

Answer 1

Answer:

4048.38 J

Explanation:

By using the formula Q=mcΔT

Q = 0.765 × 126 × 42

= 4048.38 J

Answer 2

The quantity of heat required to raise the  temperature is 4048.38 Joules.

Given the following data:

• Temperature = 42.0°C  

• Mass of mercury = 0.765 kg

We know that the specific heat capacity of mercury is 126 J/kg°C.

To find how much heat is required to raise the  temperature:

Mathematically, heat capacity or quantity of heat is given by the formula;

$Q = mc\theta$

Where:

• Q represents the heat capacity or quantity of heat.

• m represents the mass of an object.

• c represents the specific heat capacity.

• ∅ represents the temperature.

Substituting into the formula, we have:

$Q = 0.765$ × $126$ × $42$

Quantity of heat, Q = 4048.38 Joules

Therefore, the quantity of heat required to raise the  temperature is 4048.38 Joules.

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