Posted by Ashok on Sunday, January 6, 2013 at 12:13am.
a.
c1v1 = c2v2
c = concn
v = volume
Substitute and solve for the one unknown.
b.
You want how many mols? That's mols Na2CO3 = M x L = ?
Then mols = grams/molar mass. You know mols and molar mass; solve for grams Na2CO3.
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