Explanation:
number of moles can be derived from molarity law as shown in the figure
The number of moles of sodium hydroxide are in the solution should be considered as the 0.0875 moles.
Since there is 50.0 mL of a 0.350 M sodium hydroxide solution.
So here the no of moles should be
[tex]= Molarity * volume\\\\= 250 *10^-3 * 0.350[/tex]
= 0.0875 moles
hence, The number of moles of sodium hydroxide are in the solution should be considered as the 0.0875 moles.
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