Hellpppp

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Hellpppp

Postby Guest » Tue Mar 27, 2007 4:59 am

i need to know these anwsers
1. A solution has a volume of 2.0L and contains 36.0 g of glucose. If the molar mass of glucose is 180 g/mol wat is the molarity of the solution?
2. A solution has a volume of 250 Ml and conctaions .70 mol NaCl. What is its molarity?
3. How many moles of ammonium nitrate are in 335 Ml of .425M Nh4No3?
4. How many moles of solute are in 250 mL of 2.0M CaCL2? How many grams of CaCl2 is this?
5.How many milliliters of a stock solution of 4.00M Kl wouild you need to prepare 250 mL of .760M KI?
6.If 10 mL of pure acetone is diluted with water to a total solution volume of 200mL, what is the percent by volume of acetone in the solution?
7.A solution contains 2.7g CuSO4 in 75 mL of solution. What is the percent (mass/volume) of the solution?
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