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OpenStudy (anonymous):
Solutions help, please? And if you could, can you explain why? I don't really get how to solve these. Thank you in advance(: 1. How many milliliters of a stock solution of 2.00M KNO3would you need to prepare 100.0 mL of 0.150M KNO3? 2. How many grams of K2SO4 would you need to prepare 1500 g of 5.0% (m/m) solution?
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OpenStudy (doc.brown):
What's molarity?
OpenStudy (anonymous):
Molarity is the concentration of the number of moles in a solute per liter of solvent.
OpenStudy (doc.brown):
Moles per liter, exactly. What's a mole?
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