Determine the concentration of ca^2+ in the well water
Determine the concentration of Ca^2+ in the well water(assuming the water's pH is such that the CO3^-2 ion is not hydrolyzed? The well water in an area is "hard" because it is in equilibrium with CaCO3 in the surrounding rocks.
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Compound X is known to contain hydrogen, carbon, and the oxygen. When a fresh sample of "Compound X" was burned, it was found that the pressure of the H2O gas created was twice the pressure of the CO2 gas.
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