One of these pails contains 1 gallonand one has 3 gallons. Water temperature is the same on both. Check the one that has more calories or heat energy. Explain your choice

Dear Student, Heat Energy contained in a system depends on its mass, its specific heat and temperature. Here everything is constant except volume i.e., mass. So, the pail having greator volume(mass) will have have greator heat energy. Here, Pail having 3 gallon of volume will have greator heat energy. Regards.