Answer:
The energy it takes to increase temperature of one L of water by 1°C is commonly referred to as a 1000 cal.
Explanation:
Calorie is a unit which is used to measure heat or energy. It is defined as the amount of the heat energy required to increase the temperature of 1 g water by 1 K or 1°C. It is also known as gram calorie and is denoted by cal.
Whereas, the amount of the heat energy required to increase the temperature of 1000 g or 1 kg (1 kg = 1000 g = 1 L ) water by 1 K or 1°C, is called kilocalorie or food calorie and is denoted by Cal or kcal.
Therefore, 1 Cal or 1 kcal = 1000 cal.
