100g of hot water at 90degrees celcius is poured into 100g of cold water in the well lagged beaker .the cold water and the beaker were at 30degrees .the temperature of the resulting mixture was 57.1

Hno3(aq) → h+(aq) + no3−(aq). picture ii best represents the strong acid hno3. strong acids are strong electrolytes

Sorry i dont understand the question can you rephase it?

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   

Its the second one nonmetals are moldable and easily shaped