Question

CHEMISTRY
0.5 litre of a sample of hard water (d = 1 g/mL) contains 68 mg of Caso 222 mg of CaCl, and 58.5 mg of
NaCl. What is the hardness of water in terms of Caco,?
(A) 250 ppm
(B) 500 ppm
(C) 700 nm
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Answer 1

The B option is correct answer