Question

Approximately how much heat energy does it take to raise 1 kg of water by 1 k?

Answer 1

Answer:

4186 Joules

Explanation:

The specific heat capacity of a substance is defined as the amount of heat needed to raise the temperature of 1 kg of the substance by 1 Kelvin. In formula,

$C_s = \frac{Q}{m \Delta T}$

where

Q is the amiunt of heat needed

m = 1 kg is the mass

$\Delta T = 1 K$

is the variation of temperature of the substance

For water, the specific heat capacity is $4186 J/(kg K)$. This means that the heat energy required to raise 1 kg of water by 1 K is exactly 4186 J.