One gram of sodium hydroxide (NaOH) is used to adjust the pH of an aqueous solution (200 gallons) that contains 10 lbs of finely ground rhodochrosite (MnCO3) ore. Does the NaOH raise or lower the solution pH? What is the amount of NaOH added in lbs/ton? What is the molarity (mol/l) of the system? Assuming the NaOH is completely soluble and the system is at room temperature, what is the solid-to-liquid ratio (wt%) of the system?