The vessels are filled with liquids of equal mass having the same temperature: sunflower oil, water and kerosene.

The vessels are filled with liquids of equal mass having the same temperature: sunflower oil, water and kerosene. Which of them will heat up the least if you give them the same amount of heat?

The amount of heat received by each portion of liquid is calculated by the formula:

Q = cmΔt.

From here we obtain an expression for the difference between the final and initial temperatures:

Δt = Q / cm.

From the last formula it can be seen that the difference between the final and initial temperatures with equal amounts of heat and the same mass will be in the liquid that has the highest heat capacity c. It is known that the heat capacity of water is 4200 J / (kg * K), and that of kerosene and sunflower oil is at least two times less. We come to the conclusion that the water temperature after heating will be the lowest.

Answer. Water.