To calculate the heat capacity of the water, we can use the formula:Heat capacity Q = mass m specific heat c change in temperature T In this case, the mass m of water is 50 grams, the specific heat c of water is 4.18 J/gC, and the change in temperature T is not given. However, since we are asked to find the heat capacity at 25C, we can assume that the change in temperature is not relevant to the calculation.So, the heat capacity Q of the water can be calculated as:Q = m cQ = 50 g 4.18 J/gCQ = 209 J/CTherefore, the heat capacity of 50 grams of water at a temperature of 25C is 209 J/C.