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19. 5 kg of water contains 24 mg of MgSO4 and 32.4 mg of Ca(HCO3)2. The total hardness of water is? |
| Answer» 19. 5 kg of water contains 24 mg of MgSO4 and 32.4 mg of Ca(HCO3)2. The total hardness of water is? | |