Chemical,when you light a match stick, you are starting a chain reaction of the substance chemical formula, making it a chemical change
Answer:
Cotton is the world's most widely used natural fibre and still the undisputed "king" of the global textiles industry.
Explanation:
Explanation:
As the total concentration is given as 1.2 mM. And, it is also given that salt present in the solution is NaCl.
As sodium chloride is an ionic compound so, when it is added to water then it will dissociate into sodium and chlorine ions as follows.

So, it means in total there will be formation of 2 ions when one molecules of NaCl dissociates.
Therefore, concentration of chlorine ions will be calculated as follows.
Concentration of
ions =
= 0.6 mM
Thus, we can conclude that the concentration of chloride ions is 0.6 mM.
Answer:
the second one ..........