An exhausted zeolite bed was revived by 250 L of NaCl solution containing `50gL^(-1)` of NaCl solution. How many litres of hard water of hardness 250 ppm can be softened on the zeolite bed?

The hardness of 10^5 L of a sample of H_2O was completely removed by passing through a zeolite softener. The bed on exhaustion required 500 L of NaCl solution containing 15gL^(-1) of NaCl for regeneration. Calculate the hardness of the sample of water.

The hardness of 10^5 L of a sample of H_2O was completely removed by passing through a zeolite softener. The bed on exhaustion required 500 L of NaCl solution containing 15gL^(-1) of NaCl for regeneration. Calculate the hardness of the sample of water.

The mole fraction of NaCl in a solution containing 1 mole of NaCl in 1000 g of water is

Calculate the molarity of a solution containing 11.7 g of NaCl in 2.0 L solution. (M_(NaCl)=58.5 g mol^-1)

The mole of fraction of NaCl in a solution containing 1 "mole" of NaCl "in" 100 g of water is:

Calculate the molarity of a solution containing 1g of NaOH in 250 mL of water.

How many grams of NaOH should be added to water to prepare 250 ml solution of 2 M NaOH?

How many grams of NaOH should be added to water to prepare 250 ml solution of 2 M NaOH?

The approximate molarity of a solution in mol L ^(-1) that contains 13.50 g of naCl dissolved in 452 mL of water is