Which best describes the octet rule? (*hint- octet rule relates to valence electrons) *
A. Atoms in a compound will give away all of the electrons in it outermost energy level.
B. Atoms in a molecule will share electrons in order to get 8 electrons each in their outermost energy levels.
C. Atoms all have 8 valence electrons before they form compounds and molecules

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.

Select all the correct answers.which compounds have the empirical formula ch20? (multiple answers)a.c2h4o2b.c3h603c.ch2o2d.c5h1005e.c6h1206

What occurs when a cell engulfs large food particals