Is weathering a constructive or deconstructive process?

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer.