easy five chem1 questions due 2 hours

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DUE in 2 hours quick!! Please provide solutions and answers!!

 

1. What is the molar concentration of NaOH when 23.7786 g is dissolved in enough water to fill a 500.00 mL volumetric flask? (MW NaOH = 39.997 g/mol)

 

2. What is the molality of a solution prepared by dissolving 12.011 g of sucrose in 250.0 mL of water at 24oC? (Hint: Use Table 2-7.  MWsucrose = 342.30 g/mol)).

 

3. A solution is prepared that is 23.44 wt% NaCl in water. What is the molality of the solution? (MWNaCl = 58.443 g/mol)

 

 

4. How many grams of PbCl2 will be produced if excess HCl is added to 30.00 mL of a 0.2319M solution of PbNO3 according to the following reaction.  (Assume that the reaction proceeds to completion.  MWPbCl2 = 278.1164 g/mol.)

              Pb
2+(aq) + 2Cl
–(aq) —–> PbCl
2(s)
 
 
5. What is the concentration of a NaOH solution if 34.98 mL of it reacted with 1.9278 g of KHP? (MWKHP = 204.23 g/mol)

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