I would agree with the second one, not the first. You can't always see the chemical reaction, and it isn't always sudden. But the second claim is true.
The molarity of the NaCl in the 250 ml slat solution is 2.8M.
<h3>What is molarity?</h3>
The molarity of a solution is defined as the concentration of a solute per unit volume of the solution.
Given, the volume of the solution is 250 ml converted into l 0.25
The number of moles of NaCl is 0.70.
By the formula of molarity

Thus, the molarity is 2.8 M.
Learn more about molarity
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90 miles per hour. just divide 540 by 6
3–ethyl–2,4–dimethylhexane
CH₃-CH(CH₃)-CH(C₂H₅)-CH(CH₃)-CH₂-CH₃