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EnRou EnRou
wrote...
Posts: 757
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6 years ago
How much of a 1:20 solution of NaCl is needed to make 1 L of 1:50 solution of NaCl?
 
  a. 2000 mL
 b. 1000 mL
 c. 500 mL
 d. 400 mL
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6 years ago
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