Bryan is doing a chemistry lab and needs to measure exactly 3.5000 mL of water. How many significant digits are in this measurement? 1
2
3
5

I am pretty sure it’s five..

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