Posted by **Hiba** on Tuesday, September 14, 2010 at 8:36pm.

How many liters of water must be added to 4 liters of a 6 molar HNO3 solution to create a solution that is 2 molar?

- chemistry -
**DrBob222**, Tuesday, September 14, 2010 at 8:57pm
mL x M = mL x M

(Note: the final volume will NOT be the number of mL that must be added.)

- chemistry -
**Hiba**, Tuesday, September 14, 2010 at 9:05pm
So will it be 0.004*6=2(mL)

0.024/2=mL

0.012mL ?

- chemistry -
**DrBob222**, Tuesday, September 14, 2010 at 9:12pm
You think 4 L = 0.004 mL? Think again, once to get the correct volume, then a second time after you have re-read my note.

- chemistry -
**Hiba**, Tuesday, September 14, 2010 at 9:24pm
Sorry i got confused so it is 4000 mL. So will the final volume be the L that is added?

- chemistry -
**DrBob222**, Tuesday, September 14, 2010 at 9:34pm
No, the final volume will be the final volume. You STARTED with 4000 mL and the final volume is xxx; therefore, xxx - 4000 will be the mL that must be added.

Technically, that isn't exactly right because the volumes usually are not additive but I think the intent of this problem is to assume the volumes ARE additive.

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