Answer to Question #141595 in General Chemistry for Javier

Question #141595
If 2.76 moles of NaCl dissolve in water to make a 900.0 mL solution, what is the molarity of the solution?
1
Expert's answer
2020-11-14T14:02:05-0500

number of moles of NaCl = 2.76 moles

Volume = 900mL = 9001000dm3=0.9dm3\frac{900}{1000}dm^3 = 0.9dm^3


molarity=number of molesVolume=2.76/0.9=3.07mol/dm3\begin{aligned} \textsf{molarity} &= \dfrac{\textsf{number of moles}}{Volume}\\ \\ &= 2.76/0.9\\ &= 3.07mol/dm^3 \end{aligned}


\therefore The molarity of the solution is 3.07M


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