posted by Vanessa .
i kinda understand waht you're saying. to be a bit more clear this is from a lab,
and here are the volumes we retrieved:
Volume of Concentrated NaOH soultion (mL) = 9.00 mL
Concentration of Concentrated NaOH soultuon (M) = 6.00 M
Volume of Stock Solution after Dilution (mL) = 490.00 mL + 9.00 mL (from the first part)
and then the question says the give the Approximate concentration of Stock solution (M).
It says to use the formula: amount of solute (moles) / volume of solution (L)
I'm confused with how to get amount of solute with the 6.00 M and 9.00mL volume.