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posted by  simone on 9/23/2007 2:31:35 PM  |  status: Live  

In Need of Chemistry Help!

Course Textbook Chapter Problem
General Chemistry N/A N/A N/A
Question Details:
How much of a 13.5 M MgSO4 solution is required to make 100ml of a 10% (w/v)
solution?
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posted by CaLi...:) on 9/23/2007 3:34:00 PM  |  status: Live
Asker's Rating: Helpful   
simone's comment:
"Thanks for trying, but it wasn't the right approach :)"
Response Details:
10% of 100 mL is 10 mL
 
conversion for mL to grams  (1ml = 13.55g)
 
10mL x (13.55g/ 1mL) = 135.5 g
-------------------------------------------------------------
13.5 M MgSO4 x (120.368 g MgSO4/ 1 M MgSO4) = 1624.96 g MgSO4
 
135.5g / 1624.96 g MgSO4  = .083 g of 13.5 M MgSO4
 
 
I think this would be the right approach, let me know
 
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