10.3.2 g of XOH reacts completely with 20cm of 2M dilute sulphuric (VI) acid. a) Write down chemical equation for the reaction.
(1mk)
(2mks)
b) Calculate the RAM of X in the formula XOH.
ohtained by fractional distillation of liquid air​

The answer to your question would be c. mineral oil  

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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.