In which, if any, of the compounds listed is the central atom not sp3 hybridized? z1) cf4 z2) h2o z3) sif4 z4) chcl3 z5) nh3 1. Z4, z5 2. Z3, z5 3. Z2, z4, z5 4. Z1, z2, z3 5. All are sp3 hybridized.

Which best explains why an iceberg floats?

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.