chemistry problems (I know the answers but having problems of figuring it out)?

Liang

New member
1. How many milligrams of LiOH must be added to 50.0 mL of 0.0891 M KOH solution to make solution 0.100 M in OH-?

2. What volume of 0.200 M NaOH is necessary to neutralize 40.0 mL of 0.0973 M HCl? Write a net ionic equation for this reaction.

3. A 5.000 mL sample of window glass cleaner, containing ammonia, is neutralized by 17.83 mL of 1.011 M HNO3. The net ionic equation is NH3 (aq) + H+ = NH4+

What is the molarity of the ammonia in the window glass cleaner?

4. What mass of NaCl is required to precipitate all the lead ions from 75.00 mL of 0.0250 M Pb(NO3)2?

5. What mass of solid aluminum hydroxide is produced (precipitated) when 50.0 mL of 0.250 mL of 0.100 KOH? Write a net ionic equation for this reaction.

7. Calculate the height of a column of benzene, in mm (d=0.879g/cm3) that exerts a pressure of 0.950 atm.

8. A 30.0 L tank of N2 (g) at 20.5 atm is connected to a tank of unknown volume. When the gas is allowed to fill both tanks the final pressure is 5.45 atm. What is the unknown volume (n and T are held constant)?
 
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