You have two water samples.
sample x has a volume of 750 ml and a temperature of 42◦c.
sample y has a volume of 380 ml and a temperature of 42◦c.
which sample contains the most heat?

1.) sample y
2.) both samples contain the same amount of heat.
3.) sample x
4.) cannot determine from information given.

Explanation:

In thermodynamics, the heat content of heat of a system or a substance is described by the term enthalpy.

The heat content (enthalpy) is an extensive property, meaning that it is dependent on the amount of substance.

More substance more heat energy content.

Heat content is also related with the temperature. The higher the temperature the greater the kinetic energy and the higher the heat content.

Since, sample X and sample Y are both at the same temperature of 42°C, this variable does not differentiate the heat content of such samples.

Since, the sample X has more volume than sample Y, as per the previous conclusion that the more substance the more heat energy, you can certainly asses that the former contains the most heat.