Tuesday

September 16, 2014

September 16, 2014

Posted by **chelsea** on Wednesday, November 7, 2007 at 5:35pm.

1. When 11 mL of a solution containing 2.9 M AlBr3 is diluted to 33 mL, a dilute solution is formed. What is the Br- concentration in 25 mL of the dilute solution?

2. A stock solution is prepared by adding 23 mL of 1.2 M AlCl3 to enough water to make 76 mL. What is the Cl- concentration of 40 mL of the stock solution?

3. When 26 mL of a 335 mL stock solution containing 2.01 M Na2S is diluted to 76 mL, how many moles of Na+ are in the new solution?

4. When 48 mL of a solution containing 4.1 M AlCl3 is diluted to 50 mL, a dilute solution is formed. How many moles of Al3+ ions are contained in 14 mL of the dilute solution?

5. How many milliliters of a 135 mL solution of 1.7 M Na3PO4 must be used to make 71 mL of a solution that has a concentration of .6 M Na+?

6. A 11 mL sample of a solution of AlBr3 was diluted with water to 21 mL. A 17 mL sample of the dilute solution was found to contain 0.047 moles of Br-. What was the concentration of AlBr3 in the original undiluted solution?

- chemistry -
**drwls**, Wednesday, November 7, 2007 at 7:04pmOne question per post, please. Show your work. Jiskha is here to help you learn, not to do your homework for you.

**Answer this Question**

**Related Questions**

reading and writing - I am having a hard time getting started. I need to compare...

Trigonometry - Alrighty I have to find two real world sinusoidal functions. I ...

Chemistry - Consider the following equilibrium process at 686 C C02(g)+H2(g)=CO(...

Chemistry - I'm having a hard time getting started studying for my chemistry ...

chemistry 12 - Calculate [H3O] an [OH] for a sodium hydroxide solution having a ...

Math - I am having a hard time with these problems and could you show me how to ...

math - evaluating functions For some reason I can't get these 3 problems correct...

MATH - cos(x)=2 and sin(x)=5 Thanks for your previous answers mathmate. No. It's...

Statistics-Probability - An instructor will choose 3 problems from a set of 7 ...

Calculus AP - Volume of Revolution - Hi. I have a few calculus problems that I ...