Groundwater in a formation rich in gypsum has the following composition: pH = 7.7 [Na+] = 35 mg/L [Ca2+] = 116 mg/L [SO4 2-] = 110 mg/L [Cl-] = 48 mg/L TOTZn = 65 µg/L DIC = 65 mg/L (a) Calculate the alkalinity (meq/L) of the solution. (b) Determine the speciation Zn and Ca in the solution. What are the two most abundant species of each of these elements? (c) The water is pumped to the surface and placed in an open tank, where it is dosed with 5 × 10-4 M HCl and aerated. Determine the pH, DIC (mg/L) and ALK (meq/L) of the

yes

ya te ayud espera

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.