<p>What volume of 0.1 N oxalic acid solution can be reduced by 250g of an 8 percent by mass&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>K</mi><mi>M</mi><mi>n</mi><msub><mi>O</mi><mn>4</mn></msub></math>&nbsp;solution?</p>