What is the molarity of a solution that contains 0.50 mole of NaOH in 0.50 liter of solution?

2.0 M?
0.50 M?
0.25 M?
1.0 M?

Answer:
0.5 moles in 0.5 Litres means 1 mole in 1 Litre. Therefore, the answer is:

1.0 M
Molarity = moles per litre
M=moles/l = 0.5moles/0.5l
=1.0M
0.5 divided by 0.5 equals 1.0M
Molarity= mol/L
Molarity= 0.50mol/0.50L=1.0M

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