.700 moles of an unknown solid is placed into water to make 150.0 mL of solution. The solutions temperature decreases by 8.41 degrees Celsius. Calculate delta H, in kj/mol, for the dissolution of the unknown solid. (The specific heat of the solution is 4.184 J/g• degree Celsius and the density of the solution is 1.02 g/mL).

How does the digestive system interact with the circulatory system? a. messages sent as electrical impulses from the digestive system are transported throughout the body by the circulatory system. b. nutrients taken in and broken down by the digestive system are carried to various parts of the body by the circulatory system. c. nutrients and gases are absorbed by organs in the circulatory system. then, they are transported to all parts of the body by organs in the digestive system. d. oxygen and carbon dioxide are exchanged by organs in the digestive system, and the gases are carried to the rest of the body by the circulatory system.