You need to carry six cans of paint from the basement of your house to the attic. will you do more work if you take the cans to at a time or if you carry them all at once?

They are like other investigations? say there was a murder u have to do blood test and finger prints which run through a lab. 

The formula is (nh4)2co3

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   

That is a lot of moles that you have