1L of a sample of hard water contains 1 mg `"CaCl"_(2)` and 1 mg `"MgCl"_(2)`. Estimate the degree of hardness of this sample of water.

One litre of a sample of hard water contains 1 mg of CaCl_(2) and 1 mg of MgCl_(2) . Find the total hardness of water in terms of parts of CaCO_(3) per 10^(6) parts of water by mass.

1L of a sample of hard water contains 1 mg of each of CaCl_(2) and MgCl_(2) . Express the harnedd of the sample in ppm, in terms of CaCO_(3) .

One litre of a sample of hard water contain 4.44mg CaCl_(2) and 1.9mg "of" MgCl_(2) . What is the total hardness in terms of ppm of CaCO_(3)?

One litre of a sample of hard water contain 4.44mg CaCl_(2) and 1.9mg "of" MgCl_(2) . What is the total hardness in terms of ppm of CaCO_(3)?

One litre of a sample of hard water contain 4.44mg CaCl_(2) and 1.9mg "of" MgCl_(2) . What is the total hardness in terms of ppm of CaCO_(3)?

One litre of a sample of hard water contains 5.55 mg of CaCl_(2) and 4.75 mg of MgCl_(2) . The total hardness of ppm of CaCO_(3) is

One litre of a sample of hard water contains 5.55 mg " of "CaCl_(2) and 4.75 mg" of "MgCl_(2) . The total hardness in terms of ppm of CaCO_3 is