Liquid water enters a steady-state heat exchanger at p 1 mpa and t-353.15 k, and exits as saturated water vapor at p-1 mpa a. using the steam tables, find the change in specific enthalpy for this process. b. using the approximation that cp-4.19 kj/kg-k for liquid water, find the change in enthalpy when liquid water is heated from 353.15 k to its boiling point at p 1 mpa. c. how do the answers to parts a and b compare to each other? what is the reason for the difference between them?

Asample contains 16.75 g of the radioisotope u-236 and 50.25 g of its daughter isotope, th-232. how long did it take for decay to take place if one half-life of u-236 is 23 million years? 46 million years 69 million years 92 million years 115 million years

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat