Particular anion can be "positively identified" if the presence of that anion is indicated by a reaction that cannot be confused with any other reaction and that cannot be masked (hidden) by any other reaction occurring at the same time. suppose that a solution contains four anions: chloride, nitrate, nitrite and sulfate. which anions can be positively identified

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?