Question

How much heat energy is necessary to raise the temperature
of 5 kg of water from 20°C to 100°C ?​

Answer 1

Answer:

answer is 4,00,000

Explanation:

first of convert kg into g

then C(H2O)=1

Answer 2

Answer:

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