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Chemistry
Myah Brown
11 June, 05:41
What is % w/w of 18 m naoh? density 1.48 g/ml?
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1
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Parker Key
11 June, 06:32
0
As,
w/w % = weight of Solute / Weight of Solution * 100 - - - (1)
Finding weight of Solute:
As,
1 mole of NaOH = 40 g
So,
18 moles = X g
Solving for X,
X = (18 mol * 40 g) : 1 mol
X = 720 g
Finding mass of Solution:
Multiply density of the solution by 100 mL
So,
= 1.48 g/mL * 1000 mL
= 1480 g
Putting values in eq. 1,
w/w % = 720 g / 1480 * 100
w/w % = 48.64 %
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