Question

How much heat is required to raise the temperature of 500 g of mercury from 20 °C to 100 °C ? [ Specific heat of mercury = 0.033 kcal/(kg. °C) ]​

Answer 1

Answer:

1320 calories          

Step-by-step explanation:

⇒ Heat Energy Required = Mass × Specific Heat Capacity × Change in                          Temperature

⇒ Heat Energy Required = 500 g × 0.033 cal g⁻¹ °C⁻¹ × (100°C - 20°C)

                                          = 500 × 0.033 × 80

                                          = 1320 calories           ←ANSWER

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Answer 2

Answer:

Step-by-step explanation:

. Given: Mass (m) = 5 kg

Temp. difference (∆T) = 100 - 20 = 80°C

Specific heat capacity (c) = 1 kcal/kg°C

To find: Heat energy (Q) = ?

Formula: Q = mc∆T

Solution:Q = 5 × 1 × 80

= 400 kcal