Answer: The final concentration is 0.16 M.
Explanation:
According to the dilution law:
where,
= molarity of stock solution = 1.60 M
= volume of stock solution = 54.0 ml
= molarity of diluted solution = ?
= volume of diluted solution = 218 ml
Putting these values:
Now 109 ml of this diluted solution is further diluted by adding 161 mL of water.
Again applying dilution law:
Thus the final concentration is 0.16 M
Math that what my friend says math!!!
<span>you only have one number
so taking the number of atoms given to you 6million
is there a conversion factor that relates the number of atoms ......to 1 mole?</span>
Answer: its a single replacement reaction
[H+][OH-] = 1x10-14 = Kw (Memorize this relationship)
(2.70x10-2)[OH-] = 1x10-14
[OH-] = 1x10-14/2.70x10-2
[OH-] = 3.70x10-13 M (assuming you ignore the autoionization of H2O)