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Topic: I need help on this question.  (Read 4724 times)

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Offline Lumberjack21

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I need help on this question.
« on: October 22, 2007, 04:30:17 PM »
    * In part A you will prepare a dilution solution of 0.1M NaOH using a 500mL graduated cylinder and pump dispenser.
    * The solution is then mixed and stored in the amber bottle found in your drawer.
    * Be sure the cap is in good condition.

Calculate the volume of 6.0M NaOH needed to make 450 mL of about 1.9 M NaOH.
142 mL <=== Correct Answer
   You are correct. Computer's answer now shown above.

Calculate the volume of 6.0M NaOH and distilled water that need to be mixed to make 450 mL of about 0.10 M NaOH.

Q:Volume 6.0M NaOH in mL
Q:Volume distilled water in mL


Note the values for 1.b. on your report sheet. Be sure to immediately rinse with water any skin coming in contact with 6.0 M NaOH and wash hands after use.


So, thats the question, it suggests to use M1V1 = M2V2, and I've been trying to work this out for about an hour now. I don't know what I'm doing wrong, could someone please help.

Offline LQ43

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Re: I need help on this question.
« Reply #1 on: October 22, 2007, 09:41:55 PM »
how have you been trying to work it out?

is there a part of the example that you didn't understand?

Offline LQ43

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Re: I need help on this question.
« Reply #2 on: October 22, 2007, 11:55:00 PM »
    Calculate the volume of 6.0M NaOH and distilled water that need to be mixed to make 450 mL of about 0.10 M NaOH.

Q:Volume 6.0M NaOH in mL
Q:Volume distilled water in mL


So, thats the question, it suggests to use M1V1 = M2V2, and I've been trying to work this out for about an hour now. I don't know what I'm doing wrong, could someone please help.

Using M1V1 = M2V2, which one are you looking for? can you assign the data "6.0M NaOH and distilled water that need to be mixed to make 450 mL of about 0.10 M NaOH  "  to the variables?

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