Question

500 ml of a sample of water contains 0.5 mg
CaCl2, and 0.5 mg MgCl2. The degree of hardness
of water is
1) 1.95 ppm
(2) 2.25 ppm
3) 2.90 ppm
(4) 0.95 ppm​

Answer 1

Answer:

i think its 3) 2.90

Explanation: