What is the hardness of the water in terms of molarity of caco,? d. 3.89 x 10' m a 3.89x 10' m b. 3.89 m c. 0.020 m what is the hardness of the water in terms of ppm caco,? 18. 3 89 ppm b. 38.9 ppm c. 20 ppm a. 389 ppm

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

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