We have a 500 litre tank containing a liquid product contaminated by small particles that must be removed before the product can be sold. the particle concentration is, initially, 10' particles/m and the product may only be sold if the particle concentration is reduced to 10 particles/m. we have a filter that will effectively remove all particles from the liquid product. (a) at what rate must the product be pumped through the filter to make the product acceptable after 2 days; you may assume that the tank is well- mixed and the filtered product is continuously returned to tank. draw a sketch of this process (b) at the pumping rate determined in part (a) how long will it take to filter the product if a second vessel is used to hold the filtrate. what will the particle concentration in the filtered product be in this case? (c) repeat part (a) assuming the filter only removes 90% of the particles on each pass.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

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i don't know people like to fight everywhere rip.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.