The hardness of 100000 litres of a sample of hard water was completely removed by passing through a zeolite softner. The bed on exhaustion required 500 litres of NaCl solution containing 15g/l of NaCl on regeneration. Calculate the hardness of the sample of the sample water.
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The hardness of 100000 litres of a sample of hard water was completely removed by passing through a zeolite softner. The bed on exhaustion required 500 litres of NaCl solution containing 15g/l of NaCl on regeneration. Calculate the hardness of the sample of the sample water
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