a process for softening water in which hard-water ions are exchanged for other ions

water containing high concentrations of calcium, magnesium, and/or iron ions

a compound or mixture of compounds to assist cleaning that does not form insoluble precipitates with Mg2+ or Ca2+ as soaps do

a device containing an ion-exchange resin that is used to treat water by removing ions causing water hardness

repetitive processes of rainfall, run-off, evaporation, and condensation that circulate water within Earth's crust and atmosphere

a process for softening water in which hard-water ions are exchanged for other ions

water containing high concentrations of calcium, magnesium, and/or iron ions

a compound or mixture of compounds to assist cleaning that does not form insoluble precipitates with Mg2+ or Ca2+ as soaps do

a device containing an ion-exchange resin that is used to treat water by removing ions causing water hardness

repetitive processes of rainfall, run-off, evaporation, and condensation that circulate water within Earth's crust and atmosphere

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