What ph must the water be raised
A water contains contains 2.0 meq/LCa2+ and 1.3 meg/L Mg2+. If one wanted to remove the hardness species by hydroxide precipitation, to what pHmust the water be raised and maintained in order for both calcium and magnesium toform hydroxide solids?
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Scientists want to estimate the mean weight of mice after they have been fed a special diet. From previous studies, it is known that the weight is normally distributed wwith standard deviation 3 gram.
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Determine the mass the bathysphere must take on so that it can descend at a cinstant speed of 1.20 m/s when the resistive force o it is 1100 N upward. The density of the sea water is 1.03 x 10^3 kg/m^3.
A water contains contains 2.0 meq/LCa2+ and 1.3 meg/L Mg2+. If one wanted to remove the hardness species by hydroxide precipitation, to what pH must the water be raised and maintained in order for both calcium and magnesium to form hydroxide soli
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