If you have 340mL of a 0,5 M NaBr
solution, what will the concentration
be if you add 560mL more water to
it? (Hint: you need the final volume of
the solution)
O
1.3 M.
O 0.30 M
O 0.19 M.
O 0.77 M

Determine the  wavelength of light emitted when an electron  in an li2+ ion  makes a transition from an orbital with n  =  6 to an orbital with n  = 5.

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