4. A sample containing 10.0 mL of 0.300 M H2C2O4 is mixed with 5.00 mL 0.0500 M KMnO4. The purple color of the permanganate disappears after 37.5 s. a. Calculate the initial concentrations of KMnO4 and H2C2O4 in the mixture. (Hint: use the dilution equation. What is the final volume of the solution?)

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Idon't mean to be a smart alec, length of atoms' bonds is the simplest way to define it.

Van der waals forces are temporary electromagnetic forces established between uncharged atoms. some neutral molecules, when close together, can become temporarily “charged,” as electrons move around the atom. water is a polar molecule, the side of the molecule that the hydrogens bond to being more positive, and the opposite side bound to the lone pairs of electrons being more negative. this means that it participates in dipole-dipole interaction (non-polar exhibits dispersion forces), and it has the capacity for hydrogen bonding.