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What is the molarity of a 2.0 L sodium hydroxide solution containing 10.0 grams of solute? A.0.80 B.0.13 C.5.0 D.0.25
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What is the molarity of a 2.0 L sodium hydroxide solution containing 10.0 grams of solute?

A.0.80
B.0.13
C.5.0
D.0.25

User Mandeep Janjua
by
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1 Answer

3 votes
Molar mass NaOH ( sodium hydroxide) = 40.0 g/mol

Number of moles:

n = mass / molar mass

n = 10.0 / 40.0

n = 0.25 moles

Volume = 2.0 L

Molarity = number of moles / volume in liters

M = 0.25 / 2.0

M = 0.125 M

answer D

hope this helps!
User Crazydiv
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