A container contains three gases, N2, O2 and Ar, with partial pressures of 23.3 atm, 40.9 atm and 13.7 atm respectively. What is the total pressure inside the container?

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Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf   

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