To find the final temperature of the water, we can use the formula:
q = m * c * ΔT
where q is the heat energy, m is the mass of the water, c is the specific heat capacity of water, and ΔT is the change in temperature.
Given that 20.0 grams of water is heated by 3.2 kJ of heat, and the initial temperature is 25 degrees Celsius, we can rearrange the formula to solve for the final temperature.