(a) A plywood industry uses boiler steam to make the plywood a very stronger and long- lasting one. The company uses a zeolite softener before feeding the water into the boiler. The machine has a capacity of 5000 L/hour to soften hard water. During a process, the zeolite bed was exhausted after 10.5 hours and 425 litres of 0.6 N sodium chloride solution was required to restart the function of the zeolite process. Work out the hardness of hard water in ppm.
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(a) A plywood industry uses boiler steam to make the plywood a very stronger and long- lasting one. The company uses a zeolite softener before feeding the water into the boiler. The machine has a capacity of 5000 L/hour to soften hard water. During a process, the zeolite bed was exhausted after 10.5 hours and 425 litres of 0.6 N sodium chloride solution was required to restart the function of the zeolite process. Work out the hardness of hard water in ppm
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